Archifau Ynys Môn / Anglesey Archives
Location
- Advice on accessing these materials
- Web
- Telephone
- +44 01248 751930
- Address
- Industrial Estate Road, Bryn Cefni Industrial Estate, Llangefni, Anglesey, LL77 7JA, Wales, UK
- Opening Hours
- Monday to Wednesday 10:00 - 16:00. Thursday to Sunday - Closed.
- Access Information
- For information about planning a visit, please see: http://www.anglesey.gov.uk/leisure/records-and-archives/archives-plan-your-visit/
- Photographs Allowed
- no
List of Collections(View as Search Results)
- A small collection of miscellaneous items
- Abstract of Original Will: Owen Williams of Penmynydd, gent.
- Abstract of Title: Freehold property known as Tyn y Caeau, Menai Bridge
- Abstract of Title: Sir Richard Bulkeley Williams Bulkeley and Richard Lewis Mostyn Williams Bulkeley
- Account Book: Anglesey Needlework Guild
- Account Book: Estate of Rev. Thomas Jones Williams, late of Llanfaethlu rectory
- Account Book: J. Hughes, Bryn Hyfryd, Talwrn
- Account Book: Mrs Walter Hughes, Isallt in account with John Evan Jones, Shop Penlon, Llangefni
- Account Book: Owen Williams, ironmonger, Stanley Crescent, Holyhead
- Account Book: Thomas, Clegyrog Ganol, Rhosgoch
- Account Book: Trysorfa Pedrgoch Friendly Society
- Account Books: Robert Wynn of Bodewryd, esq
- Account of Costs: Building Llangoed Village Hall
- Account: Voyages and crew list of the Herald, registered at Beaumaris
- Accounts: Oats and straw [supplied from Plas Penmynydd]
- Accounts: Sale of coal at the Berw Colliery
- Accounts: Sale of the White Elephant
- Accounts: The Barque, Lady Hilda
- Acknowledgement to the friends of the Dinam family by R.W. Prichard
- Act for allowing a drawback of the duties upon coals within the Isle of Anglesey
- Act of Parliament: Repairing roads London to Bangor and building a bridge over the Menai Strait
- Act to explain the Act for the case of H. M. subjects re salt duties
- Act: Confirming a patent granted to William Tench for erecting a lighthouse on Skerries
- Act: Provide for the vesting in the county council of the administrative county of Anglesey of the existing water undertakings
- Acts: Relating to Towyn Trewan Common
- Adroddiad Blynyddol: Eglwys Cyngar Sant, Llangefni
- Adroddiad Blynyddol: Eglwys Soar, Methodistiaid Calfinaidd
- Adroddiad: Cymanfa Ganu Bedyddwyr Môn
- Adroddiad: Hanes y Sessiwn yng Nghymru gwaith Jac Glan y Gors
- Adroddiadau Blynyddol: Eglwys Cyngar Sant, Llangefni
- Adroddiadau Blynyddol: Eglwys a Chynulleidfa Methodistiaid Calfinaidd, Peniel, Porth Amlwch
- Aerial Photograph: A trench system
- Aerial Photograph: Under construction the 80,000 ton capacity alumina storage unit for Anglesey Aluminium
- Aerial Photographs of Anglesey taken by R. A. F. Valley
- Aerial Photographs: Anglesey
- Aethwy Rural District Council and Dwyran Rural District Council Records
- Affidavits: Annual value of estates in parishes of Llangeinwen, Cerrigceinwen and Llanrhyddlad
- Agendas and Reports: Committees to be considered at the quarterly meeting of the Anglesey Education Committee to be held at the Shire Hall, Llangefni
- Agreement: Between Richard Roberts and Richard Lewis of Gadfa
- Agreement: £100 and interest at 4% p.a. after a term of four years
- Airships over Mona, Anglesey
- Album: Anne Lucy Poole, Beaumaris by her brother William on the occasion of her 15th birthday
- Album: Autographs, poems and drawings
- Album: Photographs of churches on Anglesey
- Amlwch and District Community Nursing League of Friends
- Amlwch Urban District Council Records
- Amrywiol: Yn cynnwys llyfr Athraw cerddorol, llyfr Y Fordd Hawsaf i Ddeall yr Ysgrythyrau, Clydach Vale disaster memorial card
- An Act to Empower the Bishops of Welsh dioceses to facilitate the making provision for English services in certain parishes in Wales
- Anglesey Bridges - Quarter Sessions papers
- Anglesey Committee for the Welfare of Handicapped persons
- Anglesey Constabulary Records
- Anglesey County Council Records
- Anglesey County Court records
- Anglesey County Nursing Papers
- Anglesey Embroiderers
- Anglesey Gas Records
- Anglesey Militia - Quarter Sessions
- Anglesey Petty Sessions records
- Anglesey Poor Law Union Records
- Anglesey Quarter Session Rolls, 1800 -1809
- Anglesey Quarter Session Rolls, 1772 - 1799
- Anglesey Quarter Session Rolls, 1810 - 1819
- Anglesey Quarter Session Rolls, 1820 - 1829
- Anglesey Quarter Session Rolls, 1830 - 1839
- Anglesey Quarter Session Rolls, 1840 - 1849
- Anglesey Quarter Session Rolls, 1850 - 1859
- Anglesey Quarter Session Rolls, 1860 - 1869
- Anglesey Quarter Session Rolls, 1870 - 1879
- Anglesey Quarter Session Rolls, 1880 - 1889
- Anglesey Rural Community Council Photographs and Papers
- Anglesey Wesleyan Circuit Records
- Annual Register: Milk Records: Robert Jones, Ty Mawr, Llanfair P. G.
- Annual Report: North Wales Association for the Arts
- Annual Report: North Wales Society for the Blind
- Annual Report: St. Cyngar's Church, Llangefni
- Annual Report: Statement of accounts of the North Wales District of the Workers Educational Association
- Annual Reports: Anglesey Mining plc
- Appointment: John Pitman, gent. as Ensign in the Foot Regiment commanded by Thomas Farrington, esq.
- Appointment: Trustees of the marriage settlement dated 17th August 1863
- Apprenticeship Indentures of Richard Evans and Richard Owen
- Archaeological Reports: Anglesey Sites - C. R. Archaeology
- Archaeological Reports: Anglesey Sites - Wessex Archaeology
- Archaeological Reports: Anglesey Sites - Headland Archaeology
- Archaeological Reports: Anglesey Sites - Individual Archaeologists
- Archaeological Reports: Anglesey Sites - Gwynedd Archaeological Trust
- Archaeological Reports: Anglesey Sites - Cadw
- Archifau Cyngor Sir Gwynedd yn ymwneud ag Ynys Môn / Gwynedd County Council Archives relating to Anglesey
- Article: Account of the removal from Llanfair P. G. station of the 58 letter name plate
- Article: Concerns the escape of Owen Morris from Beaumaris Gaol
- Article: Description of the treadmill invented by Mr William Cubitt of Ipswich
- Article: Mona Mine Letters by Thomas Richards
- Article: Rhosneigr railway station and staff with brief account of the services provided
- Article: The Introduction of fluoridation in Anglesey
- Article: The Rev. Hugh Davies F. L. S. - An outline of his literary life
- Articles: Concerning old games which used to be played by Anglesey children
- Assessment: Poor Rate, pa. Holyhead, at 4d in the £.
- Assignment of lease and a draft abstract of title
- Assignment: Lease of the Rectory and Church of Penmon
- Assignment: Mortgage of Water Corn Mill and Wind Corn Mill in the parish of Llanwenllwyfo
- Assignment: Williams Bulkeley Arms Hotel, Beaumaris with the furniture and effects
- Associated Ethyl/Octel
- Theatr Fach Llangefni Papers
- Autograph Album: Miss Bessie Owen
- Baled: Drylliad y Royal Charter, Hydref 26, 1859
- Ballad: Portraying the excellencies of Parys Mountain by Joseph Jones
- Bangor Diocesan Records
- Baptism Register: Capel Mawr, Bethesda, Calvinistic Methodist Chapel, Amlwch
- Barclays English Dictionary and Notes: Thomas Fraw Evans, who emigrated to America
- Barddoniaeth: Llew Llwydiarth, Bardd o Sir Fôn
- Barddoniaeth: Mrs M. G. Griffiths, Caergybi
- Barddoniaeth: Mrs M. G. Griffiths, 9 Llaingoch, Holyhead
- Barddoniaeth: Mrs M. G. Griffiths er cof am Jane Griffiths
- Beaumaris Port Health Authority
- Beibl, Llun a Thaflen John William Jones
- Benllech and District Gardening Club
- Biliau: Anfon at Mrs Roberts, Rhiwgoch, Llanerchymedd
- Bill and Licence: Cerrig Lloi, Llaingoch, Holyhead
- Bill: Dinner and drinks and dinner ticket for the Anglesey Hunt dinner at The Williams Bulkeley Arms Hotel, Beaumaris
- Bill: Morris Owen and Trevor Roberts, solicitors, Carnarvon to Mr. John Williams, Glascoed Cottage, Newborough
- Bill: Repairs and Report of Survey of the vessel 'Lord Tredegar' from Port Natal to Captain Jones
- Billhead: Williams Bulkeley Arms Hotel, Beaumaris
- Bills and Vouchers: Rock Vaults, Menai Bridge
- Bills: Letter concerning the Roberts family
- Bills: Monies owed by Messrs E. W. Timothy and Sons, Menai Bridge
- Bills: Roberts, Glan-Llyn, Llanfair P. G. in respect of articles supplied by Anglesey traders
- Bird watching logs compiled by the late John P. Wilkinson of Malltraeth
- Black and White prints of photographic recording of churches and chapels
- Blank Notice: Redemption of the Land Tax
- Bodelffra, Rhosgoch, Amlwch Collection
- Bodfeirig Estate Papers
- Bodfeirig Estate; Additional collection
- Bond: In the sum of £500 concerning the Rectory of Penmon
- Bond: Sum of £360 for the performance of covenants in an indenture of release
- Book Plate: An Amlwch crew at Millom
- Book Plate: Captain Owen Roberts, Amlwch with his family aboard the Ford Fisher of Barrow
- Book Plate: Captain Williams, Master of Heir Apparent and Formalhaut
- Book Plate: Four Amlwch Master Mariners on leave in Amlwch Port
- Book Plate: Frances Williams founder of the Anglesey Association for the preservation of life from shipwreck
- Book Plate: Illustration for early lifeboat reports by Frances Williams
- Book Plate: Master Mariner Captain Owen Williams and the crew of the Earl Dunraven
- Book Plate: Painting of Formalhaut in Captain Williams' home in Llansadwrn
- Book Plate: Rev. James Williams secretary of the Anglesey Association for the preservation of life from shipwreck
- Book Plate: Reverend Owen Lloyd Williams, coxswain of Cemlyn lifeboat
- Book Plate: Sketch of George IV landing at Holyhead in 1821
- Book Plate: Slate schooners in Port Penrhyn
- Book Plate: The Mary B. Mitchell a Penrhyn slate schooner
- Book Plate: The Mary B. Mitchell being towed by Ja-Ja- Jetty
- Book Plate: The Meyric built by William Thomas in 1904
- Book Plate: The Steel four masted barque Oweenee, Captain Robert Jones of Amlwch
- Book Plate: The wreck Sarah at Trecastell 1835 painted by Frances Williams
- Book Plate: Workers in William Thomas' shipyard, Amlwch ready for launching the Detlef Wagner in 1891
- Book: A Topogrphical and Historical Description of Anglesea or Mona
- Book: A visit to Tyn-y-Coed, Llanddaniel fab by Graham John Hardy
- Book: Caernarvon Castle: An historical sketch and description by Montagu H. Cox
- Book: Containing notes on theological texts belonging to Robert Wynne of Bodewryd
- Book: Newspaper cuttings mainly concerned with Llangoed
- Book: Newspapers cuttings of mainly Anglesey interest
- Book: Record of Agricultural holdings in Anglesey
- Book: Simpson's Anglesey Beauty Spots
- Book: The Case of Admission of Occasional conformist to the Holy Communion
- Book: The Reasons of Edward Sclater, Minister of Putney for his conversion to the Catholic faith
- Book: The Story of the Life-Boat
- Book: Two hundred and fifty-one views of north Wales
- Booklet: Aled Eames Memorial Lecture - North Wales Maritime Archaeology
- Booklet: An Authentic Account of Beaumaris and its castle
- Booklet: Anglesey Executive Council, National Health Service
- Booklet: Anglesey Marine Terminal produced by Shell U. K. Ltd.
- Booklet: Beaumaris Gaol Museum catalogue of the collections and furniture
- Booklet: List of Members and Statement of Account: Menai Bridge Institute
- Booklet: Order of Service for the dedication of the Anglesey replica of the Welsh National Book of Remembrance
- Booklet: Order of Service for the funeral of John Cave, MBE, Holyhead
- Booklet: The Spire by the Bridge. Menai Bridge English Presbyterian Church
- Booklet: The Story of the Lifeboat
- Booklets: Highway Code, Road Sense Motorist's Pocket Book
- Books: Battle of Britain Book - Royal Air Force, Valley
- Books: Dinmor Quarry
- Books: Post War Recipe
- Brief for the Prosecution: Anglesey Spring Assizes, 1873
- Bryngolau (Llanddona) Papers: Deeds, correspondence and rent books
- Bulkeley Arms Hotel, Beaumaris
- Bulletin written by Robert Roberts, 155a London Road, Holyhead
- Bye Laws: Regulation of the market and pier, Borough of Beaumaris
- Caergeiliog Smithy Records
- Calendar: H. M. S. Conway, Llanfairpwll
- Calendr: Y Glorian
- Calendr: Y Glorian
- Capel Armenia, Methodistiaid Calfinaidd, Caergybi
- Capel Carmel, Porth Amlwch, Ynys Môn
- Capel Ebeneser, Methodistiaid Calfinaidd, Niwbwrch
- Capel Hebron, Annibynwyr, Bodorgan
- Capel Hebron, Methodistiaid Calfinaidd, Bryngwran
- Capel Hyfrydle, Methodistiaid Calfinaidd, Caergybi
- Capel Methodistiaid Calfinaidd Disgwylfa, Caergybi
- Capel Penuel, Llangefni
- Capeli Annibynwyr: Amrywiol
- Captain W. J. Hughes (Moelfre) papers
- Card: Requesting the receiver to vote for Richard Owen Roberts
- Cardiau Aelodaeth: Clwb Rygbi Llangefni
- Cardiau Coffa / Memorial Cards
- Cards: Invitations and Menu. Functions held at Anglesey Castle, Plas Newydd
- Cardyn Coffa: Ann Roberts, Clwch Bach, Richard Roberts, Rhiwgoch Fawr, Carmel
- Cardyn: Er cof am Elizabeth Roberts, Hendy, Llanfairynghornwy
- Cardyn: Er cof am John Owen Jones [ap Ffarmwr]
- Case: For opinion and the opinion given, on the erection of public footpath signs on Bodior Estate land by Rhoscolyn parish council
- Casgliad / Collection Capel (M.C.) Dwyran, Ynys Môn
- Casgliad / Collection Capel (M. C.) Penygarnedd, Pentraeth
- Casgliad / Collection Capel Bethania, (M.C.) Llangaffo, Anglesey
- Casgliad / Collection Capel Bethania, (A) Llanddeusant, Anglesey
- Casgliad / Collection Capel Bryndu, (M.C.) Llanfaelog, Anglesey
- Casgliad / Collection Capel Gwyn, (B) Bryngwran, Anglesey
- Casgliad / Collection Capel Peniel, (MC) Porth Amlwch
- Casgliad / Collection Capel Pont yr Arw (B), Llanfachraeth
- Casgliad / Collection Capel Y Bedyddwyr Capel Seion, Llanfairmathafarneithaf
- Casgliad / Collection Capel/Eglwys Rehoboth, (A) Llanfaelog
- Casgliad / Collection Capel/Eglwys Salem, (M. C.) Llanfwrog
- Casgliad / Collection: William Glyn Thomas
- Casgliad am y diweddar William Charles Williams M. B. E., actor o Fodffordd gan ei brawd hynaf y diweddar Emrys Williams
- Casgliad Amgueddfeydd Ynys Môn (Gwynedd) / Anglesey (Gwynedd) Museums Collection
- Casgliad Capel Ebenezer, (M.C.) Llanfaethlu, Anglesey
- Casgliad Clwb Gwerin Cefni
- Casgliad Côr Meibion Y Traeth
- Casgliad i diweddar Mary Evans o Dalwrn
- Casgliad Llyfrgell Llangefni Collection
- Casgliad Mr Howell Evans M.B.E., Cae Mawr a Merllyn, Llanerchymedd
- Casgliad Robert John Henry Griffiths (Machraeth)
- Casgliad y Diweddar Cynghorydd William John Williams, M.B.E., Talwrn
- Casgliad y diweddar Mair Morris
- Casgliad y diweddar Owain Thelwell Parry Roberts, Penrallt, Amlwch, Archaeolegwr Morol
- Casgliad Y Parchedig Dr Dafydd Wyn Wiliam, Bodedern
- Casgliad/Collection Menai Bridge Community Heritage Trust Ltd.
- Casgliad/Collection Mrs Gaynor Nice, née Griffith o Gaergybi/ of Holyhead
- Casgliad: Capel Ty'n Rhos (Seion) Eglwys M.C. Rhoscolyn Presbyteraidd
- Casgliad: John Alwyn Parry
- Casgliad: Merched y Wawr, Rhanbarth Môn
- Casgliad: Tom Parri Jones, bardd ac awdur, Malltraeth, Ynys Môn
- Casgliad: William Williams, Bryn Du
- Cash Book: Cuhelyn Temperance Hotel
- Catalogue: Anglesey Federation of W. I.'s Tenth Art Exhibition
- Catalogue: Beaumaris Camera Club. Tenth Annual Exhibition
- Catalogue: Peeds Seeds
- CD (R): Miscellaneous Images of Anglesey
- CD: Images captured by Carl Hussey whilst walking on Anglesey
- CD: Yn cynnwys lluniau Biwmares a 17 sleidiau lliw
- Cefnmawr and Rhuddgaer and Plas Penrhyn papers
- Cemaes Bay Playing Fields Association
- Census: 1851 Returns for the parish of Llanerchymedd
- Cerdyn Coffa: William Owen, 2 Crossing Terrace, Llanfairpwll
- Cerdyn Mynediad i ginio Gwyl Ddewi: Y Ford Gron, Amlwch
- Cerdyn Post: Eglwys Beaumaris at Mrs W. R. Roberts, Rhiwgoch Fawr, Llantrisant, Llanerchymedd
- Cerdyn Post: Llun o Evan Roberts yr Efengylwr
- Cerdyn Post: Ty yn pregethodd Christmas Evans ei bregeth gyntaf
- Cerdyn: Calendr 1917 oddiwrth garedigion ym Môn
- Cerflun a Llyfrau: Ynglyn â Amgueddfa Brynsiencyn
- Certificate: Awarded to Margaret A. Howard by the Society of Science, Letters and Art for practical music
- Certificates: Discharge of Seaman Robert Jones
- Certificates: Re the Hughes family of Ty Mawr, Holyhead
- Charity Commission Records
- Charity papers, mainly Penmynydd area
- Chart: Amlwch Port in the North of Anglesey
- Chart: Holyhead Bay
- Children's Vaccination Register Book: Llanddausaint sub - district
- Christmas Card: St. Mary's Church, Llanfair P. G. as it was before 1853
- Church Report: St. Cyngar, Llangefni
- Clwb Pêl Droed Llangefni / Llangefni Football Club
- Clwb Rugbi Benllech Rugby Club
- Coastguard Boarding Book: Vessels arriving at Cemaes, Llanbadrig
- Cofnodion Capel Methodistiaid Calfinaidd Bryn Du, Ynys Môn
- Cofnodion Cyngor Sir Ynys Môn / Ynys Môn County Council Records
- Cofnodion Methodistiaid Calfinaidd Ynys Môn (Cofnodion Cyfarfod Misol Môn)
- Cofnodion: Capel Dwyran, Methodistiaid Calfinaidd
- Cofnodion: Capel Gad Bodffordd
- Cofnodion: Capel Gwyn, Capel Bedyddwyr, Llechylched
- Cofnodion: Capel Methodistiaid Calfinaidd Talwrn
- Cofnodion: Capel Methodistiaid Calfinaidd, Bryntwrog
- Cofnodion: Capel Saron, Penrhyd, Amlwch
- Cofnodion: Cymdeithas Meistri Pedoli Genedlaethol / National Master Farriers Association (Cangen Ynys Mon)
- Cofnodion: Eglwys Bethel, Bedyddwyr, Rhosybol
- Cofrestr Bedyddiadau a Llyfrynnau, Pensarn Berw
- Coins: Druid tokens, 18th cent., Anglesey mines, Mynydd Parys
- Collection of George Lees
- Collection: Dr W. Parry-Jones, Doldir Glanhwfa Road, Llangefni
- Collection: E. Norman Kneale
- Collection: Eric A. Aldred (Theatr Fach)
- Collection: Harold A. Coulter
- Collection: Thomas Owen Roberts
- Colour Dust Jacket: "Ships and Seamen of Anglesey" by Aled Eames
- Colour Photograph: A cafe [on Bangor Pier]
- Colour Photograph: A copper plate designed by Miss Jane Adeane of Plas Llanfawr, Holyhead
- Colour Photograph: Aerial view of houses, warehouses, possibly a small factory and allotments
- Colour Photograph: Horse in a rug
- Colour Photograph: Octel Amlwch goods train passing Llyn Cefni
- Colour Photographs: Britannia Bridge construction of the second tier
- Colour Photographs: Clearance for and construction of the A55 across Anglesey
- Colour Photographs: Launch of the Fife One Design Yacht, Elin
- Colour Photographs: Miscellaneous Anglesey
- Colour Photographs: The anchor of the schooner Mary B. Mitchell
- Colour Postcard: "Spooning in Wales", shows courting couples
- Colour Postcard: Anglesey Beaches: Cemaes Bay, Benllech, Trearddur Bay and Moelfre
- Colour Postcard: Kingstown harbour, Ireland [Dunlaoghaire]
- Colour Postcard: Lady dressed in Welsh Costume
- Colour Postcard: Map of Anglesey with illustrations
- Colour Postcard: Map of Anglesey and Bangor showing the roads, parish names and main towns
- Colour Postcard: Menai Straits from Look-out, Bangor
- Colour Postcard: Old Welshwomen at tea in National Costume
- Colour Postcard: The River Liffey at North Wall, Dublin Via Holyhead
- Colour Postcard: Views of Anglesey
- Colour Postcard: Views of Anglesey
- Colour Postcard: Views of Anglesey
- Colour Postcard: Views of Anglesey
- Colour Postcard: Views of Anglesey
- Colour Postcard: Views of Anglesey
- Colour Postcard: Views of Anglesey
- Colour Satellite Photograph: Great Britain including Wales
- Colour Satellite Photograph: Llyn Peninsula and part of Anglesey showing Llanddaniel and Aberffraw
- Colour Slides and Photographs: David Rogers Jones, Derec Owen and Don Williams
- Colour Slides: Mixed Anglesey Views
- Colour Slides: Mixed Anglesey views by William John Thomas
- Colour Slides: South Stack Lighthouse and Benllech Beach
- Colour Transparencies: Miscellaneous Anglesey
- Coloured Postcard: "Anglesey is so Hat-tractive"
- Coloured Postcard: "Gossiping Welsh Women"
- Coloured Postcard: Four ladies dressed in Welsh Costume
- Coloured Postcard: S. S. La Marguerite, S.S. St. Tudno, S.S. St. Elvies, S.S. Snowdon
- Coloured Postcard: S.S. Cynfal and mountains from Beaumaris
- Contact Prints: Adfeilion Gwyndy, Llandrygarn; Llanfairpwll Toll; Mona
- Contact Prints: Anglesey and other views including Capel Celyn
- Contact Prints: Anglesey Views
- Contact Prints: Anglesey Views
- Contact Prints: Anglesey Views and others including Capel Celyn
- Contact Prints: Anglesey Views
- Contact Prints: Anglesey Views
- Contact Prints: Anglesey Views
- Contact Prints: Anglesey Views
- Conveyance: Land called Caemawr and Ponciau tyn y Bryniau and Llain y gwnna
- Conveyance: One-third of an annuity of £100 payable from the revenues of the Skerries Lighthouse
- Copi CD: John Griffith yn siarad am y Rhyfel Byd Cyntaf yng ngogledd Affrica
- Copi Cylchgrawn Plwyf: Bodedern 1885 Meh.
- Copi Llun: Adeilau'r rheilffordd ger Ceint
- Copi Llun: Cwmni Drama Gwalchmai
- Copi Llun: Dadorchuddio'r Gofeb Gwalchmai
- Copi Llun: Diwrnod dyrnu ger Llangefni
- Copi Llun: Dynion oedrannus ar fainc
- Copi Llun: Gweithwyr Gerddi Bodorgan
- Copi Llun: Gwerthu hwyaid wrth stesion Llangefni [tua 1910]
- Copi Llun: Rhigod ar olwynion o Ddolgellau
- Copi Llun: Tim ffwtbol y cownti sgwl, Llangefni
- Copi Lluniau allan o albwm teuluol yn gysylltiedig a Melin Llynon
- Copi Lluniau gyda chysylltiad a Llangefni a'r cylch
- Copi Llyfryn: Carreg ar Garreg, hanes yr achos Methodistaidd yn Llanfaethlu
- Copi Llythyrau: John Williams, Ty Mawr, Dodgeville, Wisconsin
- Copi Llythyrau: Moses Parry a John Elias, Fron [Llangefni]
- Copi Taflen: Rhestr o gystadlaethau cynrych cartref yn Neuadd y Bentref, Talwrn
- Copi Testynau: Eisteddfod Gadeiriol Llanrhyddlad
- Copi Testynau: Eisteddfod Gadeiriol Llanrhyddlad
- Copi Tocyn Mynediad: Eisteddfod Gadeiriol Llanrhyddlad
- Copy [Ordnance Survey] Map: Llandegfan Anglesey
- Copy Bond: Making an inventory of the goods and chattels of Rowland Maximilion
- Copy Census Household Schedule: William Jones, Nantuchaf, Llaneugrad, 1881 Apr. 2
- Copy Certificate: Birth of Ann Jones of Gilfach, Llanfairynghornwy in 1869
- Copy Correspondence: Relating to Miss Lucy Williams, 30 Newry St., Holyhead
- Copy Documents: In the possession of Mr A. l. Owen, Swn y Wylan, Rhosneigr
- Copy drawing of 'The Rowena' off Cape Horn
- Copy drawing of the wreck of the 'Royal Charter' near Moelfre
- Copy Drawings: Anglesey houses and churches by Lewis Morris
- Copy Enclosure Award: Llanfeirian 1820
- Copy Journal: His Majesty's Packet the Uxbridge
- Copy Letter Book: Henry Bowen keeper, South Stack Lighthouse
- Copy Letter: Carless, Capel & Leornad, Hope Chemical works, Hackney Wick
- Copy Marriage Registers - Superintendent Registrar
- Copy Pamphlet: Book of remembrance concerning the unveiling of Holyhead War Memorial
- Copy Pamphlet: Life in Pictures of Brigadier General Sir Owen Thomas
- Copy Photograph of a steam train 84003 at Amlwch
- Copy Photograph of farming scene: threshing with the help of a steam engine
- Copy Photograph of steam train Vulcan 70024 at Holyhead
- Copy Photograph of two men and a women dipping sheep
- Copy Photograph: 'The Irish Minstrel'
- Copy Photograph: 'The Kate Thomas'
- Copy Photograph: 'The Owenee'
- Copy Photograph: 13 Platoon Yorkshire and Lancashire Regiment
- Copy Photograph: 14th (Service) Battalion The Royal Welsh Fusiliers on parade at Llandudno
- Copy Photograph: [Thetis beached at Traeth Bychan]
- Copy Photograph: A boy sitting on a tractor
- Copy Photograph: A charabanc coach, O. Glynne Parry driving
- Copy Photograph: A family group
- Copy Photograph: A family group sitting by a water pump
- Copy Photograph: A man holding a horse in harness
- Copy Photograph: A man making rope
- Copy Photograph: A map of Anglesey engraved by John Gibson [c. 1766]
- Copy Photograph: A Massey Harris combine harvester working at Plas Newydd
- Copy Photograph: A memorial to Joe Rodgers the first man ashore from the Royal Charter
- Copy Photograph: A model of 'The Mary Stewart'
- Copy Photograph: A statue of Llywelyn the last Prince of Wales at Cardiff Town Hall
- Copy Photograph: A woman and a boy feeding calves from buckets
- Copy Photograph: A woman using a water pump
- Copy Photograph: A wreck scene at Yarmouth
- Copy Photograph: A yacht being rescued by Moelfre Lifeboat
- Copy Photograph: Advert for R. M. S. Hibernia, Cambria and Scotia
- Copy Photograph: Airship crew stationed at Mona Airfield by Llangefni town clock
- Copy Photograph: An airship stationed at Mona Airfield taken while flying over Llangefni
- Copy Photograph: An imported Ford Model T long chassis coach
- Copy Photograph: Badger trap
- Copy Photograph: Beaumaris ducking stool
- Copy Photograph: Boats at Moelfre beach
- Copy Photograph: Building a railway, presumably Red Wharf Line
- Copy Photograph: Carreg Bran, Llanfairpwll
- Copy Photograph: Carthorses. Possibly at Red Wharf Bay
- Copy Photograph: Clio Training Ship in the Menai Strait
- Copy Photograph: Crew of the Carnarvonshire [c. 1876]
- Copy Photograph: Crew of the S. S. Pamela
- Copy Photograph: Drinking tea during a brake from the harvest
- Copy Photograph: Fleet of Vulcan Duke 20 seater buses supplied to U-Need-Us Services, Caernarfon
- Copy Photograph: Fox Hounds in Anglesey
- Copy Photograph: Fragments of a letter found on the edge of the Libyan desert
- Copy Photograph: Group of men with the Eisteddfod Chair
- Copy Photograph: Gwyl Coroni
- Copy Photograph: H. M. S. Conway at Liverpool
- Copy Photograph: H. M. S. H5 Submarine off the Irish Coast
- Copy Photograph: H.M.S. Conway aground in the Menai Strait
- Copy Photograph: J. T. Wood grocer, draper, general merchant and post office
- Copy Photograph: La Marguerite arriving at Menai Bridge
- Copy Photograph: La Marguerite at Menai Bridge
- Copy Photograph: Llangefni United football team in 1914
- Copy Photograph: Loading milk churns onto a cart
- Copy Photograph: Man man and two boys on tractor EY 7767
- Copy Photograph: Members [and staff] of the Anglesey County Council
- Copy Photograph: Memorial at Holyhead to the victims of the submarine Thetis
- Copy Photograph: Men and children sitting in a horse-drawn carriage
- Copy Photograph: Men carrying out tests in a river
- Copy Photograph: Men gathering in the corn
- Copy Photograph: Men with horses harvesting a corn field
- Copy Photograph: Men working with a threshing machine
- Copy Photograph: Men working with a threshing machine
- Copy Photograph: Menai Strait taken from Caernarfonshire shore looking towards Anglesey
- Copy Photograph: Milking cows by hand
- Copy Photograph: Moelfre Lifeboat and crew
- Copy Photograph: Mole trap
- Copy Photograph: Mole trap
- Copy Photograph: Mole traps
- Copy Photograph: Newborough Borough Seal
- Copy Photograph: Newborough Mat Makers
- Copy Photograph: Penrhos, Soar, Bodorgan. Home of John Leonard Gibson, gamekeeper
- Copy Photograph: Pentraeth Railway Station [c. 1935]
- Copy Photograph: People eating a meal in the open air during a break from harvesting
- Copy Photograph: Plaque erected in commemoration of seaman, William Williams
- Copy Photograph: Pupils and teacher No. 3 class, Llanfairpwll Board School
- Copy Photograph: Rhosneigr Fire Wagon
- Copy Photograph: S.S. St. Elvies moored at Belfast
- Copy Photograph: S.S. Sybil Mary
- Copy Photograph: Sally Parry, Holyhead. Sister of Madam Telini the opera singer from Bethesda
- Copy Photograph: Schooner 'Earl of Latham'
- Copy Photograph: Scout Airship Z.73 flying over Trearddur Bay
- Copy Photograph: Scout Airship Z.73 flying over Trearddur Bay
- Copy Photograph: Ship [?] Colonel
- Copy Photograph: The Cambria arriving at Holyhead, 17th May 1949
- Copy Photograph: The crew of the lifeboat 'Curling' of Bull Bay
- Copy Photograph: The earliest photograph of an Anglesey lifeboat
- Copy Photograph: The first motorcar owned by Anglesey Constabulary
- Copy Photograph: The military funeral of Pte. E. O. Thomas (55418) Royal Welsh Fusiliers at Llanffinan Church
- Copy Photograph: The Moelfre Lifeboat 'Horace Clarkson' and crew
- Copy Photograph: The Moelfre Lifeboat 'Star of Hope' and crew
- Copy Photograph: The Royal Charter
- Copy Photograph: The Schooner 'Jane Grey'
- Copy Photograph: The Ship Scotia with inserts of 29 crew members
- Copy Photograph: The tea clipper 'Norman Court' from a painting by J. Spurling
- Copy Photograph: The tilt inclinometer from the Thetis
- Copy Photograph: Troops receiving communion before The Battle of the Somme
- Copy Photograph: Two men and a boy gathering in the corn
- Copy Photograph: Two men and a horse
- Copy Photograph: Workmen building a railway, presumably the Red Wharf line
- Copy Photograph: Wreck of 'The Hindlea'
- Copy Photographs taken for use as illustrations in 'Ships and Seamen' by Aled Eames
- Copy Photographs taken from the book "Punishments of former Days" by E. W. Pettifer
- Copy Photographs used in an exhibition at the Stanley Toll House, Holyhead
- Copy Photographs: An old bread baking kiln uncovered at Llanerchymedd Rectory
- Copy Photographs: Anglesey Constabulary cap badges
- Copy Photographs: Digging potatoes by machinery
- Copy Photographs: H. M. S. Tara a converted Holyhead Mailboat the R. M. S. Hibernia which sank in the Mediterranean
- Copy Photographs: Harvesting at Plas Newydd in 1943
- Copy Photographs: Man trap
- Copy Photographs: Medals presented to Francis Fagan of Holyhead
- Copy Photographs: Sinking of the Thetis in Liverpool Bay in 1939
- Copy Photographs: The bell from the ship 'The Royal Charter'
- Copy Photographs: The ill-fated sunmarine Thetis
- Copy Photographs: The old Mona airship station
- Copy Photographs: The renovating of a 'dog cart' at Haulfre
- Copy Photographs: Tim Davies Collection of Anglesey Hunt and Llangefni
- Copy Photographs: Whalers of Anglesey by Alun Owen
- Copy Print: Ships Darling and Sarah at Traeth Bychan pre 1893
- Copy Project Work: 'A' level on the area of Talwrn. Physical and Human Geography 1957
- Copy Sheets: The Victoria Cross
- Copy Transcript: Census Llanddyfnan for 1841
- Correspondence: Captain Butterworth, Island House, Salt Island, Holyhead and Mr & Mrs Dixon, 15 Terenure Road, East Dublin
- Correspondence: Circulars, pamphlets re the English-Speaking Union of the Commonwealth
- Correspondence: Florence Nightingale and Ellen Owen
- Correspondence: Notices of meetings, agendas, reports of meetings re the Cambrian Archeological Association
- Counterpart Lease: Between Henry Bagnall, knight and Owen Holland, Berw, co. Anglesey, esq.
- Counterpart Underlease: Seven years of the Williams Bulkeley Arms Hotel and Tap Room at Beaumaris
- County Buildings Papers - Quarter Sessions
- Crew List Index Project CLIP original back-up
- Cuttings: Three newspaper photographs of a cottage before and after reconstruction
- Cyfansoddiadau a Beirniadaethau: Eisteddfod Môn
- Cyfrifon a Rhester: Tanysgrifiadau Eisteddfod Genedlaethol Frenhinol Cymru
- Cyfrol: Crynhoad o hanes Sir Fôn gan Richard Hughes, Coedana
- Cylch Llenyddol Cymru
- Cylchgrawn: Yr Ynys Ysgol Uwchradd Caergybi. Rhifyn dathlu penblwydd yr ysgol yn 75 oed
- Cylchgrawn: Yr Ysgub, Ysgol Uwchradd Bodedern
- Cylchgrawn: Ysgol Gyfun Llangefni
- Cylchgronau Amrywiol
- Cylchgronau: Cymraeg Amrywiol
- Cylchgronau: Ysgol Sir Llangefni ac Adroddiadau Blynyddol Capel Moreia, Llangefni
- Cylchlythyr a Rhestri Testunau: Poster, atodlen i'r Goleuad, Eisteddfod Gadeiriol Môn
- Cymdeithas Ddinesig Bro Porthaethwy / Menai Bridge and District Civic Society Papers
- Cymdeithas Pysgota Cefni Angling Association
- Cynllun lleol asiantaeth yr amgylchedd a Chyfarwydd Cynllunio Atodol Drafft Bioamrywiaeth Tirwedd
- Datganiad: Llongddrylliaud Primrose Hill
- David Hughes / Beaumaris Grammar School - Old Bimarensian's Collection
- David Hughes Collection
- Day Book: E. J. Evans, Manchester House, Amlwch general and fancy draper, etc.
- Ddariadau Papur Newydd Amrywiol / Miscellaneous Newspaper Cuttings
- Ddogfennau: Cynnwys lluniau, llythyrau, traethodau, etc, y cyn gwnstabl John Jones a'i deulu
- Declaration of Trust: Stanley Sailors' and Fever Hospitals, Salt Island, Holyhead
- Declaration: Robert Brisco Owen of Haulfre near Beaumaris that he purchased certain lands forming part of the Ty Cerrig estate in the parish of Llangoed
- Deed for varying the terms of a lease of the farms Gwyndy and Bodychen in the parishes of Llandrygarn and Bodwrog
- Deeds and documents re Melin Adda, Pentrefelin, Amlwch
- Deeds and Documents: Relating to Plas pella, pa. Newborough, Anglesey
- Deeds and Papers: Penmaen, Ffordd Cynan, Menai Bridge
- Deeds and Sales Catalogue: Tan Dinas Cottage, Llanfairpwllgwyngyll
- Deeds of Caeronw [Cae Ronwy], Cerrigceinwen
- Deeds: 12 Bridge Street, Llangefni
- Deeds: 5, Bryn Afon, Menai Bridge
- Deeds: Cae Serri, South Stack Rd., Llaingoch, Holyhead
- Deeds: Fields in pa. Llanfilhangelynhowyn
- Deeds: Lands and properties in Amlwch and Llaneilian
- Deeds: Lands and property called Henefal, pa. Llanfaelog, Anglesey
- Deeds: Lands and property called Boston House, pa. Llanidan
- Deeds: Lands called Tythun William Bevan situated in the township of Merddyn Gwyn and parish of Pentraeth
- Deeds: Leasehold of Cae part of a farm called Tyddyndu at Tregele, Llanfechell
- Deeds: Maes y Llan Bodwrog
- Deeds: Melin Esgob, Llandyfrydog
- Deeds: No.1 Pen-y-Berth, Llangoed
- Deeds: Properties on Anglesey
- Deeds: Property in parish Llandegfan called Bacha and Hendy also in Penmon, being part of the Lleiniog estate
- Deeds: Property near Cadnant, pa. Llandesilio
- Deeds: The Factory situtated in Moelfre, pa. Llanallgo
- Deeds: Tyddyn y Waen, Llanfechell
- Deeds: Y Ty Yngharreg yr Eithan, Hendre Rosfaire, Anglesey
- Defaulters Book: Anglesey Constabulary
- Delweddau a ddefnyddiwyd yn Y Rhwyd yn ystod golygyddiaeth y Parch. Dr Dafydd Wyn Wiliam
- Deposited and Official Maps and Plans
- Details: Sailing ship Rapido, Liverpool
- Detholiad o Bregethau Y Parchedig Theophilus Lewis
- Detholiad o waith y diweddar Thomas Dryhurst Roberts, (1909 - 2008)
- Diaries: Margaret Ann Bulkeley & Boadicea Amelia Bulkeley, 1886 - 1908
- Diary: [James] Ellis [1823 - 1886]
- Diary: Capt. Albert Marsh H. M. S. Tara
- Diary: David John Davies, engineer of H. M. S. Tara
- Diary: Police Constable No.8., E. Williams, Holyhead Police Station
- Diary: Robert Jones, Holyhead
- Dinmor Park Quarry Records
- Dinner Card: Banquet held at the Anglesey Arms Hotel, Menai Bridge on the occasion of St. David's Day
- Dinner Card: Banquet held at the Anglesey Arms Hotel, Menai Bridge on the occasion of St. David's Day
- Dinner Card: Banquet held at the Anglesey Arms Hotel, Menai Bridge on the occasion of St. David's Day
- Dinner Card: Banquet held at the Anglesey Arms Hotel, Menai Bridge on the occasion of the visit of the Cotton Queen of Britain, Miss Marjorie Knowles
- Dinner Card: Reunion dinner of the ex-service men of the Menai Bridge Branch of the British Legion
- Dissertation: Fy Mro. Braslun o Hanes Plwyf Rhoscolyn
- Documents relating to the Hughes family of Ty Mawr Mynydd, Holyhead
- Documents: Bodedern Show
- Documents: British Railways Property Board
- Documents: Capel M. C. Disgwylfa, Gaerwen
- Documents: Dinmor Quarry
- Documents: Hugh Rowlands, Bodfeddan
- Documents: John Fox - Russell, V. C., M. C.
- Documents: Llewelyn R. Thomas and family
- Documents: Mona Motor Co. Ltd
- Documents: Nan Morgan Anti - Nuclear
- Documents: Neuadd Goffa Llangefni / Memorial Institute Llangefni
- Documents: Owen Lloyd Charity
- Documents: Pte. Thomas Richard Owen 10th Batt. S. W. B.
- Documents: Re Anglesey White Marble for the Building of Birmingham Town Hall
- Documents: Used in the compilation of The Whalers of Anglesey
- Documents: William Williams of Penparc, Pentraeth and Eversley Street, Liverpool
- Documents: YWCA, Young Women's Christian Association, Menai Bridge and Holyhead
- Dogfennau Parthed: Captain William Williams o Bryn, Llanddona
- Dogfennau: Capel Nyth Clyd, Talwrn, Methodistiaid Calfinaidd
- Dogfennau: Capel Penrhosfeilw, Methodistiaid Calfinaidd, ger Caergybi
- Don Williams Photographer: Anglesey Images
- Double Slides: Cine Films
- Drawing: Pen and Ink of stone breaking at Beaumaris Gaol
- Dwr Cymru / Welsh Water
- Dwyran Rural District Council, The Llanidan and District Nursing Association and Brynsiencyn Board School
- Dyddiadur Annibynol: Perthyn i Richard Jones, joiner, Buarth, Bodedern
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur Fferm: Clegyrog Ganol, Rhosgoch
- Dyddiadur: Taith Alun Pritchard, Niwbwrch i Uganda
- Dyddiaduron Methodistaidd: Tegfan Roberts, Porthaethwy
- Dyddiaduron: R. Rees Lewis, Llanerchymedd, ffotograffydd a chigydd
- Ecclesiastical Parish Papers
- Edward Parry & Son, Siop Tabernacl, Tynygongl
- Eglwys a Chynulleidfa Eglwys Bresbyteraidd Cymru ym Mhenygarnedd
- Eglwys Methodistiaidd Calfinaidd Ebeneser, Kingsland, Caergybi
- Eitemau Amrywiol: Bangor and Beaumaris Union, University College North Wales a Methodistiaid Calfinaidd, Brynsiencyn
- Eitemau o ystâd y diweddar Dr John Humphrey Hughes, Wigan House, Llangefni
- Engraving: Menai Suspension Bridge and Britannia Tubular Bridge
- Entrance Tickets and Invitations: Investiture H. R. H. the Prince of Wales in Caernarvon Castle
- Eric Spencer Collection
- Erthygl: Witsis Llanddona, allan o Storiau Gwerin Môn
- Eryl Wyn Rowlands Papers
- Essay: Formation of the Menai Bridge Boys Brigade
- Estate of John Wynne Paynter, Bryntirion, Amlwch
- Examination Schedule: Bodedern National School
- Exhibition Panels from the launch of the book 'Looking Back' by E. Wyn Hughes
- Extra mural classes held in conjunction with Anglesey Antiquarian and Field Club Society
- Extract: General Digest of Endowed Charities
- Facsimilie Items: Michael Roberts and Elin/Elen/Elan Roberts Llwdiart[h] Escob
- Family Correspondence, Ty Mawr Mynydd, Holyhead
- Family History file of the Evans and Roberts families
- Family Papers: Mills Family
- Family Tree: Goronwy Owen
- Family Tree: Goronwy Owen 1722 - 1952
- Family Tree: John R. Bulmer, Kenyon Hall, via Croft, Warrington
- Farmer's Note Book a Chylchlythyrau Cymdeithasfa Chwarterol y M. C. yng Ngogledd Cymru
- Ffeiliau hanes teulu Rowlands a Williams o Dynygongl
- Ffotograff: Cyfeiriad y Cadeirydd, Henaduriaid a Chynghorwyr
- Film Reel and Photograph Albums: Isla Johnston, Bryn Mêl, Glyngarth
- Films and Photographs: Rhosneigr holidays of Rene and Joe Morton from Bramhall
- Final Concord: Between William Vaughan, Gent., Plaintiff and Richard Rathbone, clerk and Catherine his wife
- Folder: Beaumaris Gaol education pack
- Four Line Drawings: Anglesey Hunt
- Fund Book: British Prisoners in France
- Further Special Report: Select Committee of the House of Lords on the Anglesey Marine Terminal Bill
- Game Book: Charles McIver of Llanddyfnan
- Genealogical Table: William Hughes, Llandrygan
- GeoMôn UNESCO Global Geopark Anglesey (GCR) and (RIGS) Reports
- Glass Negative: R. M. S. Ulster off Holyhead Pier
- Glass Plate Negatives: Maurice Price, Llangefni
- Glass Plates Negatives: Casgliad Llyfrgell Llangefni Library Collection of the Anglesey Antiquarian Society
- Glass Slides: Anglesey, majority of the Beaumaris area
- Grant: Piece of common land of the parish of Llanddona, for building a school thereon
- Guide Book: The First Marquess of Anglesey's Column by the 7th Marquess of Anglesey
- Gwys a Rhaglen: Cyfarfod blynddol cyngor Bwrdeistref Ynys Môn
- H. Hughes & Sons Ltd. (Ironmongers) Papers
- H. R. (Henry Rees) Davies Papers
- H.M. Coastguard, Anglesey
- Handbill: Ferry and Bus Service between Caernarvon and Anglesey
- Harbour of Refuge Lodge of Oddfellows, Manchester Unity Friendly Society, Holyhead
- Historical and Descriptive Account: Menai Suspension Bridge by W. A. Provis
- Holiaduron: Gyfer Eglwysi Annibynnol Môn
- The Holyhead Cycling and Social Club
- Holyhead Empire Theatre Company, Ltd
- The Holyhead Gas Company
- Holyhead Papers
- Holyhead Sailing Club Records
- Holyhead Urban District Council - Additional Deposit
- Hugh Hughes, papurau Amlwch
- I. Wynn Jones Papers
- Illuminated address: Presented by Anglesey County Council to Walter O. Jones
- Illuminated Address: Presented to John Jones, esq. J. P.
- Illustrated Leaflet: The Croesor Chair by F.A. Adams & Sons, Chester
- In Memoriam Card: Mary Ann Jones, Mona Brewery, [Llanfachraeth]
- Indenture: The sale of one quarter and half a quarter of the sloop, Swallow of Caernarfon
- Inner Wheel Club of Llangefni Collection
- Inventory Book: Penmon Limestone Quarries
- Invitation Card: Lieut. Col. Thomas to the occassion of the opening of the new Holyhead harbour by His Royal Highness the Prince of Wales
- Invitation: Annual General Meeting of Anglesey Rural Community Council at Town Hall, Llangefni
- Invitation: Chairman and Committee of the Menai Bridge War Memorial
- Items transferred from Conwy County Archives
- J.J. Gray, Ironmongers
- J.S. Kent Collection
- Jesus College, Oxford, Estates in Anglesey
- John Rowlands Papers
- Kingsbridge Camp, Beaumaris, Facsimile Archive
- Kingsland Sawmill, Holyhead
- Laird (Anglesey) Ltd. Photographic Records
- Land Tax Assessments & Window Tax Assessments, Anglesey
- Land Tax Assessments: Garreglwyd Papers
- Land Tax Assessments: Llaneilian
- Land Tax Records
- Lease and Release: Dwelling house and garden in Lon y Clochdy, Beaumaris
- Lease of Possession of Tythin y Glover, Kay Arthur, Llaine y Pant and Llaine Kay Gwillim, all t'ship and pa. Pentrayth
- Lease: 50 years of a water corn mill and new wind mill in the parish of Llanwenllwyfo
- Ledger and Day Books: Owen Jones, butcher, Menai Bridge
- Ledger Book: Dinmor Quarry, Penmon
- Ledger: John Edwards, wholesale grocers, Menai Bridge
- Ledger: John Owen Edwards, wholesaler, Menai Bridge
- Ledger: Llanfachraeth Wind Mill
- Ledgers: Dinmor Quarries, Penmon
- Letter: David Hughes, Walsall to Mr. Alun Owen, Holyhead
- Letter: David Maxwell Fyfe, Home Office, Whitehall to the chairman, Anglesey County Council
- Letter: George Norman, 12 Brock Street, Bath concerning the meeting of the Cambria Arch. Soc. at Llangefni
- Letter: J. Lloyd Griffith, Stanley House, Holyhead to Rt. Hon. Lord Stanley of Alderley, Penrhos, Holyhead
- Letter: John Elias from Llangefni to William Roberts esq, surgeon, Uxbridge Place, Carnarvon
- Letter: Johnny, Jesus College [Oxford]to his mother and father [Garth Ferry, Glyn-y-Garth]
- Letter: Mersey Docks and Harbour Board to Headmaster, County School, Llangefni, S. J. Evans
- Letter: Owen [?] 29, Tower Buildings West, Liverpool to his brother
- Letter: Privy Purse Office, Buckingham Palace to Mr [Isaac] Humphreys, Tregele
- Letter: William Lloyd, Holyhead to Samuel Dew
- Letters and Photographs: Miss Eluned B Griffiths, Tanat, Llangoed to Mr Harrison, Anglesey and Strait Times
- Letters of Elizabeth Grace Roberts and family history information
- Letters Patent from the Grand Master of Mark Master Masons establishing the St. Seirol Masonic Lodge
- Letters: Aerofilms Limited, Library, 29 Old Bond St., London W.1 to Town Clerk, Llangefni, etc.
- Letters: Concerning Private Emrys C. Phillips who was killed in action, June 1917
- Letters: Elizabeth Butterfield, Huntingdon to Amanda Sweet Archivist
- Letters: Emyr Jones-Williams, Tremarfon, Llanfairpwll, 1899 - 1918
- Letters: Received by Mr S. J. Evans, M. A. Headmaster of County School, Llangefni
- Letters: Wm. Bulkeley, Baron Hill to Edwards and from John Butler of Woolwich staying at Caernarvon
- Licence: The Stag of Beaumaris
- Licensing Papers - Quarter Sessions
- List of Competitors: Menai Mini Marathon
- List: Chairmen of the Anglesey Quarter Sessions, 1768 - 1971
- List: English and Welsh books to be offered at auction at Bodsuran, Trevor
- List: Thomas Telford papers held by the Ironbridge Gorge Museum
- List: Type of enemy action, property demolished or damaged number dead or wounded position of occurrence and dates, co. Anglesey
- Lithographs: Britannia and Conway Tubular Bridges
- Llandegfan Welfare Committee and Society
- Llanfairpwll Community Council
- Llangefni County School
- Llangefni County School Magazines
- Llangefni Institute and League of Friends, Cefni Hospital
- Llangefni Urban District Council Records
- Llawlyfr: Cyfarfodydd Undeb yr Annibynwyr Cymreig yn Llangefni
- Llawysgrifau: C. M. Jones, Caergybi
- Lleisiau'r Frogwy
- Lloyd family of Tregayan, Papers
- Llun Lliw: Canolfan Dydd, Beaumaris
- Llun Lliw: Canolfan Dydd, Beaumaris
- Llun Lliw: Canolfan Dydd, Beaumaris
- Llun Lliw: Canolfan Dydd, Beaumaris
- Llun Lliw: Canolfan Dydd, Beaumaris
- Llun Lliw: Canolfan Dydd, Beaumaris
- Llun Lliw: Canolfan Dydd, Beaumaris
- Llun Lliw: Canolfan Dydd, Beaumaris
- Llun Lliw: Canolfan Dydd, Beaumaris
- Llun Lliw: Pabell Cyngor Sir Gwynedd, Eisteddfod Genedlaethol Llangefni
- Llun Lliw: Pafiliwn Eisteddfod Genedlaethol Llangefni
- Llun Lliw: Plas Crigyll, cartref Bryngwran
- Llun Lliw: Plas Crigyll, cartref Bryngwran
- Llun Lliw: Plas Crigyll, cartref Bryngwran
- Llun Lliw: Plas Crigyll, cartref Bryngwran
- Llun Lliw: Plas Crigyll, cartref Bryngwran
- Llun Lliw: Plas Crigyll, cartref Bryngwran
- Llun Lliw: Y Maes, Eisteddfod Genedlaethol Llangefni
- Llun Lliw: Ysgol Corn Hir, Beaumaris
- Llun Lliw: Ysgol Corn Hir, Beaumaris
- Llun Lliw: Ysgol Corn Hir, Beaumaris
- Llun Lliw: Ysgol Uwchradd Bodedern
- Llun Lliw: Ysgol Uwchradd Bodedern
- Llun Lliw: Ysgol Uwchradd Bodedern
- Llun Lliw: Ysgol Uwchradd Bodedern
- Llun Lliw: Ysgol Uwchradd Bodedern
- Llun Lliw: Ysgol Uwchradd Bodedern
- Llun Lliw: Ysgol Uwchradd Bodedern
- Llun o ran o'r dorf a ddaeth i gefnogi Ieuan Wyn Jones, A. S. i'r Senedd yn Llundain
- Llun: Bedydd yn Afon Alaw ger Llanfachraeth
- Llun: Brwynog Home for the Eldery, Amlwch
- Llun: Cofio Siencyn Morgan, gweinidog cyntaf Ynys Môn
- Llun: Cwmni Drama Llangefni
- Llun: Cwmni Drama Mechell
- Llun: Cyfarfod cuntaf y pensiynwyr yn y neuadd newydd, teulu Paradwys
- Llun: Cyhoeddi Eisteddfod Llanerchymedd
- Llun: Cyhoeddi Eisteddfod Llanerchymedd
- Llun: Cyn aelodau dosbarth Ysgol Sul
- Llun: Côr Cymysg Eisteddfod Rhyl
- Llun: Côr Plant Machreth
- Llun: Côr Undebol Bodffordd
- Llun: Dadorchuddio'r Gofeb Gwalchmai
- Llun: Dadorchuddio'r Gofeb Gwalchmai
- Llun: Dafydd Wigley, A. S., Ieuan Wyn Jones, A. S., Dafydd Elis Thomas, A. S.
- Llun: Dathlu hanner canrif Sefydliad y Merched
- Llun: Dosbarth Ysgol Sul y pobl ifanc Smyrna
- Llun: Draig Arian
- Llun: Drama yn cynnwys Ifan Gruffydd
- Llun: Eisteddfod Llangollen
- Llun: Gorsedd y Beirdd Ynys Môn
- Llun: Gorsedd y Beirdd, Eisteddfod Genedlaethol Caergybi
- Llun: Hogia'r Gwr o Baradwys efo plac 'Cartref Ifan Gruffydd, 1896 - 1971'
- Llun: Idris Hughes, siop papur
- Llun: Ieuan Wyn Jones, A.S. ynghyd a'i gefnogwyr o Fôn y tu allan i'r Senedd
- Llun: Ieuan Wyn Jones, Plaid Cymru
- Llun: Melyn Wynt Llanddyfnan
- Llun: Mr and Mrs Simpson yn dathlu eu priodas aur, Capel Lôn y Felin
- Llun: North & South Wales Bank, Caergybi
- Llun: Parch. E. Cefni Jones a pobl tua amser dathlu 100eg penblwydd
- Llun: Parch. O. M. Jenkins, B.D., Gweinidog Smyrna
- Llun: Pobl yn dathlu dau canmlwyddiant Eglwys Horeb, Llangristiolus
- Llun: Staff y Mona Cafe, Llangefni yn ystod amser rhannu soup
- Llun: T. G. Walker
- Llun: Victoria Terrace, Beaumaris
- Llun: Victoria Terrace, Beaumaris
- Llun: Y Cyngor Sir Newydd a'r Tim Rheoli / Photograph: The New County Council and Management Team
- Llun: Y diweddar Mr a Mrs Griff Eparim efo telyn a hogan
- Llun: Yr Orsedd Eisteddfod Genedlaethol Lerpwl
- Llun: Ysgol Sul Smyrna
- Llungopïau: Gohebiaeth rhwng aelodau'r teulu Roberts o Glanrafon, Bryngwran a Petaluma, California U. S. A.
- Lluniau a chardiau post wedi'u rhoi gan Eflyn Owen-Jones
- Lluniau a phapurau: Lewis Owen Jones a Edith May Pritchard
- Lluniau Amrywiol: Clwb y Foel, Llanrhyddlad
- Lluniau Burrows Photographs
- Lluniau Llangefni amrywiol
- Lluniau: Y Goets fawr yn mynd o Fodedern i Gaergybi
- Lluniau: Y Goets fawr yn ymweld â thref Llangefni
- Llyfr Cofnodion: Cyngor Eglwysi Llangefni
- Llyfr Cofnodion: Pwyllgor Cerdd Eisteddfod yr Urdd, Caergybi
- Llyfr Cyfrifon: Cynnwys hefyd nodiadau ar y Beibl a thoriadau barddoniaeth
- Llyfr Darnau: Trem ar Hanes Addysg yn Nhrewalchmai
- Llyfr Nodiadau: William Owen Jones, Mona Brewery, Llanfachraeth
- Llyfr: Agoriad swyddogol Neuadd Henoed Llangristiolus a'r cylch
- Llyfr: Atgofion John Parry, 4 Trearddur Square, Holyhead, morwr
- Llyfr: Cyhoeddiadau Sabothol Cyfarfod Misol Môn
- Llyfr: Cynnwys enwau y rhai a gyfranodd at anrheg i Dr. W. H. Williams, Taldrwst, dwyran ar ei ymddeoliad
- Llyfr: Nodion Cof Cewri fy Ardal gan David Jones, 11 Park Terrace, Amlwch
- Llyfr: Yn cynnwys rhestr o aelodau Pwyllgor Celfyddid, Creft a Gwyddor, Eisteddfod Genedlaethol Frenhinol Cymru, Bangor
- Llyfr: Yr Wyf Fi Hugh Rowlands, Bodfeddan
- Llyfr: Ysgrifennydd Pwyllor Dathlu Heddwch Rhosgoch
- Llyfrau Cofnodion: Penderfyniadau Pwyllgor Cyffredinol Eisteddfod Gadeiriol Môn, yn cynnwys enwau a chyfeiriadau y Pwyllgor
- Llyfrau Cownt: Robert Roberts, Tan Refail, Llanddeusant
- Llyfrau Cyfraniadau: Capel Y Wesleyaidd, Llangefni
- Llyfrau Cyfrifon Refail, Hebron, Maenaddwyn, Llanfihangel Tre'r Beirdd gan William Edwards, gof
- Llyfrau Nodiadau: Penillion gan Mrs M. G. Griffiths, Llain Goch, Caergybi
- Llyfrau Thomas John Roberts, Bryn Gwyn, Llandegfan
- Llyfrau: Meddyginiaethol a Cardiau Coffa
- Llyfryn Rheolau: Undeb Chwarelwyr Gogledd Cymru
- Llyfryn: Cerddoriaeth Y Tylwyth Teg
- Llyfryn: Cinio Clwb Gwerin Cefni
- Llyfryn: Cyfansoddiadau Buddugol Eisteddfod Gadeiriol Môn, Llanfechell
- Llyfryn: Diodydd Dirwestol i'r Cynhauaf a'r Cartref / Booklet Temperance Drinks for the Harvest and Home
- Llyfryn: Hanes Peniel a Chapel Ifan, Llanerchymedd a Hebron Maenaddwyn
- Llyfryn: Mr Matthews, Mynydd Gof, Bodedern
- Llyfryn: Rhestr Testunau Gwyl Genedlaethol Cerdd Dant Cymru yn neuadd Ysgol Eilradd, Llangefni
- Llyfryn: Y Gwr O Dregaian - Y Parch. Owen Gaianydd Williams 1865 - 1928 gan John Owen
- Llyfrynau a Barddoniaeth: John Owen, Aberffraw
- Llyfrynnau: Blwyddlyfrau Ffermwyr Ifanc Ynys Môn
- Llyfrynnau: Cronicl Cyngar/Cyngar's Chronicle
- Llyfrynnau: Cymdeithas Morrisiaid Môn; Tlysau'r Hen Oesoedd
- Llyfrynnau: Seiniau Biwmares / Sounds of Beaumaris, Eisteddfod Entry
- Llythyr ar bapur biliau John Jones, marchnadwr blawd, melinau Rhosfawr a Llanerchymedd
- Llythyr i'r etholwyr: O. E. Jones, Rhyddfrydwr ac Etholiad Siriol Mon: Rhanbarth Amlwch, Cynllum o'r Papur Votio
- Llythyr: Hugh Ty Hen, Bryngwran at ei frawd, Captain H. E. Williams
- Llythyr: Hugh Ty Hen, Bryngwran at Captain H. E. Williams
- Llythyr: John Jones o Lerpwl i S. J. Evans prifathro Ysgol Gyfun Llangefni
- Llythyr: Pte. John Jones i'w fam, Mrs. Jane Jones, Buarth, Bodedern
- Llythyr: Wedi ei ysgrifennu ar bapur biliau John Jones, marchnadwr blawd
- Llythyr: Wedi ei ysgrifennu ar bapur biliau John Jones, y melinydd, y cyfeiria George Borrow ato yn Wild Wales
- Llythyr: Wedi ei ysgrifennu ar bapur biliau John Jones, marchnadwr blawd
- Llythyrau: Pte. Owen Roberts 61123 10th R.W.F. at ei deulu
- Llythyrau: William Jones, O. B. E. Llywydd Pwyllgor Gwaith Eisteddfod Genelaethol Frenhinol Cymru
- Log Book: Anglesey Ambulance Service
- Logbooks: Point Lynas lighthouse, Llaneilian
- Lord Lieutenant of Anglesey Records
- Lucas and Associates Estate Agents
- Lucy Williams papers
- M. A. Thesis: 'The Development of Local Government in Menai Bridge, 1826 - 1974'
- Magazine Illustration: Wreck of the British steamer St. Cuthbert from "The Graphic"
- Map: Anglesey to accompany Anglesey and its Place Names
- Map: Showing route of ship [Royal Charter] which went aground at Porth Helaeth, Moelfre
- Maps and Plans: Report of Commissioners appointed under the Municipal Corporations Act, 1834 into the Borough of Beaumaris
- Margaret E. Hughes collection
- Maritime Papers: Capt. John Parry, M. B. E., Moelfre
- Marriage Certificate: William Thomas Williams and Anne Ellen Thomas
- Marriage Notice Book - Anglesey
- Marriage Notice Books: Anglesey Union District and Certified copy of Marriage
- Marriage Notice Books: Marriages with and without a licence
- Masters Guard Book: No 1. S.S. Slievemore
- Mawl Gerdd: Mr Rd. Davies, Pont Menai, ymgeisydd am gynrychioli bwrdeisdrefi swydd Gaernarvon
- Memo Book: Notes on First Aid, Llanfairpwll W. I.
- Memo: C. Veyworth, Captain and Adjutant R. A. Lt. Infantry, Beaumaris
- Memorandum: Articles of Association of the Holyhead and North Wales Gas and Water Corporation, Ltd.
- Memorial Card: William Williams, Aubrey Terrace, Llanfair P. G.
- Memorial Service Programme: Rev. Robert Owen Roberts, rector of Llantrisant
- Menai Bridge Brass Band Papers
- Menai Bridge Cricket Club, Anglesey
- Menai Bridge Fire Brigade Records
- Menai Bridge Pier papers
- Menai Bridge Urban District Council Records
- Microprint: Account of the funeral of the late Mr Salis Schwabe of Manchester
- Minute Book: Cuhelyn Temperance Hotel
- Minute Book: Holyhead English Presbyterian Sewing Class
- Minute Book: Holyhead Womens Institute
- Minute Book: The Holyhead Town Hall Company, Ltd.
- Minute Book: Viscountess Bulkeley's Charity, Llandegfan
- Minute Book: Y.W.C.A. Beaumaris
- Minute Books: Anglesey Territorial Army Association
- Minutes Book: The Penmon Society
- Minutes Books: Llanfairpwll Welfare Committee and Forces Reception Fund / Welcome Home Fund Records
- Minutes: Anglesey Education Committee
- Minutes: Menai Bridge Town Council
- Minutes: Menai Bridge Town Council
- Minutes: Menai Bridge Town Council
- Minutes: Menai Bridge Town Council
- Minutes: Menai Bridge Town Council
- Misc. parish records: Parishes of Llangwyllog and Tregaian
- Miscellaneous Census Papers
- Miscellaneous Deeds: Cae Drain, Llangwyllog, Anglesey
- Miscellaneous Deeds: Commissioners of Church Temporalities in Wales
- Miscellaneous Deeds: Lands in Llanrhwydrys, Anglesey
- Miscellaneous Deeds: Lands in Holyhead
- Miscellaneous Deeds: Lands on Anglesey
- Miscellaneous Deeds: Lands on Anglesey
- Miscellaneous Deeds: Lands on Anglesey
- Miscellaneous items
- Miscellaneous Items: Anglesey Agricultural Society
- Miscellaneous Items: Custom House, Beaumaris and the Beaumaris Festivities Committee
- Miscellaneous Items: Dublin Steam Packets
- Miscellaneous Items: Formation of Theatr Ieuenctid Môn
- Miscellaneous Items: Howard family of Haulfre Cottage Llangoed
- Miscellaneous Items: Inc. patterns for samplers, a poster and paper re Chester Railway
- Miscellaneous Items: Includes Report and Covering Letter from Hugh Pritchard, Local Taxation Officer, to the Finance Committee
- Miscellaneous Items: Includes Leaflet giving a short history of St. Cybi's Church, Holyhead
- Miscellaneous Items: Including Leaflet University College of North Wales University classes for adults
- Miscellaneous Items: Jack, William, Jerman and Annie Jones, also John Hughes Morris, Liverpool
- Miscellaneous Items: John Williams of Hermon, Anglesey, 1861 - 1937
- Miscellaneous Items: Log Book, Henry Edwards, Swillies pilot No. 8 a penillion gan S. J. Griffith
- Miscellaneous Items: Menai Bridge War Memorial
- Miscellaneous Items: Rhosybol War Memorial
- Miscellaneous Items: Teacher's certificates, llythyrau, a medical certificate, a marriage certificate, an apprenticeship indenture and photographs
- Miscellaneous Items: Valley R. D. C.
- Miscellaneous Manuscript maps
- Miscellaneous photocopy Items: Delivered to John Jones of Tyddyntybodior
- Miscellaneous Printed Maps
- Miscellaneous Sales Catalogues: Anglesey
- Mona Lodge Mining Papers (M. A. Jones Deposit - Mona Lodge 2)
- Mona Lodge Mining Papers (T W R Jones deposit) (Mona Lodge 1)
- Mortgage: £400 of a water corn mill and wind corn mill in the parish of Llanwenllwyfo
- Mr Bown Collection
- Mr Norman Murcutt Collection
- Mrs A. Lloyd Jones of Plas Garnedd, Llanfairpwll, papers
- Municipal Borough of Beaumaris Records
- National Savings: Anglesey District, Records
- Naval Airship Station, Llangefni
- Negative: 2 general views
- Negative: 2 people by some rocks
- Negative: 2 views through the arch in Beaumaris
- Negative: 3 views along the Menai Strait
- Negative: A man with a knife grinding barrow in the street
- Negative: A view back towards Menai Bridge from the road to Beaumaris
- Negative: A woman playing the piano and a group of children
- Negative: Beaumaris seafront
- Negative: Central walkway on Menai Suspension Bridge
- Negative: Uxbridge Square, Menai Bridge
- Negatives and Copy Photographs: Unidentified
- Negatives by the late Mr R. Rees Lewis of Llanerchymedd
- Negatives of photographs of Beaumaris Gaol documents
- Negatives of photographs used for an exhibition in Beaumaris Gaol
- Negatives: Anglesey views
- Negatives: Capel Cildwrn, Llangefni
- Negatives: Illustrations used in Beaumaris Gaol guide
- Negatives: Material used in an exhibition at Beaumaris Gaol
- Negatives: Photographs used during the Moelfre Exhibition
- Neuadd Goffa Bro Goronwy Benllech Memorial Hall
- New Year Greeting Card: Captain and Mrs Pritchard to W. J. Edwards with picture of ship
- Newsletter: Bodeilio Weaving and Craft Centre
- Newspaper Article: Bethel Chapel, Holyhead
- Newspaper Article: Thetis, what really happened?
- Newspaper Cutting: An account of the Queen's visit through North Wales
- Newspaper Cutting: An Amlwch Society
- Newspaper Cutting: Anglesey beagles pack meet for the last time, including photo taken at Treffos
- Newspaper cutting: Flower of the Human Race
- Newspaper Cutting: Illustrated London News showing a drawing of the Queen's visit to North Wales at Penrhyn Castle
- Newspaper Cutting: Moelfre lifeboat made the all time classic rescue, by Charles Quant
- Newspaper Cutting: Moving off for the last time - Anglesey Beagles
- Newspaper Cutting: Rescue of eight men from the Hindlea by the Moelfre lifeboat
- Newspaper Cutting: The Thetis disaster
- Newspaper Cutting: The wreck of the Hindlea, Moelfre
- Newspaper Cutting: Titbits Magazine. Article by Peter Kent on a visit to the Isle of Sinners
- Newspapers: Police Gazette
- Newspapers: The Chester Courant; The Globe; The Observer; The Chester Chronicle; The Observer; North Wales Chronicle
- Nodiadau am Ann Thomas 1800 - 1879, Tynymynydd, Tregaian
- Nodlyfr: Darlith ar gyfer Ynys Môn gan J. H. Roberts, Casnewydd, De Cymru, gynt o Borthaethwy, Môn
- Nodlyfr: Llawysgrif ar hanes Penrhos, Caergybi
- North Anglesey Slate and Slab Quarry and Llanflewyn Slate and Slab Quarry Records
- Note Book: E. Madoc Jones, headmaster of Beaumaris Grammar School
- Notebook: Containing a tale called Morfudd by W. Wynn Williams, Menaifron
- Notebook: Containing extracts from the Minute Book of the Llanrhyddlad School Board
- Notebook: Includes accounts of War Weapons Week, 1941 and German bombing over Anglesey
- Notebook: W. Wynn Williams, Menaifron, entitled Fragmenta
- Notebooks of W.M. Roberts
- Notebooks: Handwritten poems and Jewel's Apology
- Notes: Alun Lloyd on the Red Wharf Bay and Benllech branch railway line
- Notice and Agenda: Meeting of the Gwynedd Police Authority
- Notice: Builders and contrators for the demolitian and rebuilding of the south side of the Almshouse at Beaumaris
- Notice: Establishment of the Amlwch Association for the Prosecution of Felons
- Notice: List of events in the eighth annual Athletic Sports at Tyn 'Rallt field, Bodffordd
- Notice: Local inquiry the purpose of considering whether the Rhosybol ward should be separated from the rest of the parish of Amlwch
- Notice: Meeting of Anglesey County Council to discuss the proposed Shell U. K. Ltd. Marine terminal off Amlwch
- Notice: Port of Amlwch Bye Laws, to be observed by all masters of vessels and others
- Notice: Proclamation of the 1887 Eisteddfod to be held in Hyde Park, London
- Notice: Reward offered for Henry James Hainge who is wanted on a charge of embezzlement
- Notice: Seventeenth Annual general meeting of the Mona Temperance Hotel Co. Ltd.
- Notice: The Accession Proclamation of King Edward VII will be read for this county, at the County Hall, Beaumaris
- Official Catalogues: Anglesey County Show, Gwalchmai
- Order of Service for the Dedication/Memorial Service of the 75th Anniversary of the loss of US Air Crew Liberator
- Order of Service: Unveiling of the Memorial Cross in the Churchyard of St. Tysilio Menai Bridge
- Ordnance Survey Map: North West Wales
- Ordnance Survey Map: Planning application made by Ynys Môn Borough Council
- Owen (Trefri, Bodorgan) Papers
- Pamffled: Crist yn erbyn Anghrist gan W. Lewis, Caergybi
- Pamfled: Cymdeithasfa Pwllheli
- Pamphlet and List: Fairey Engineering Limited
- Pamphlet: History of St. Eleth Church, Amlwch by J. Bennett Hughes
- Pamphlet: King George's Jubilee Trust, Silver Jubilee 1935 - 1960
- Pamphlet: World War 2 Christmas Recipes
- Pamphlets: Authored by by Douglas Knoop and G. P. Jones
- Pamphlets: History and Description of Beaumaris Castle; and History and Description of Bryn Celli Ddu
- Paperau: Cyngor Iechyd Cymdeithas Môn / Papers: Anglesey Community Health Council
- Papers and Photographs: John Williams Hughes, journalist and broadcaster, Marianglas, Anglesey
- Papers and photographs: Mrs Ellen Edwards, Rhos, Llangefni
- Papers of Adam Voelcker, Architect
- Papers of Alf Pritchard
- Papers of Anglesey Division of Civil Defence Corps, Welsh Philatelic Society and Dragon Radio Club
- Papers of Bronheulog, Llangoed
- Papers of Captain George Roberts, Broneirian, Porth Amlwch, Master
- Papers of Cefni Walking Club / Papurau Clwb Cerdded Cefni
- Papers of Commodore Gerald Norman Jones CBE, DSO
- Papers of Dr John Ken Roberts
- Papers of E. Madoc Jones
- Papers of Harold Senogles, Accountant, Arvonia Buildings, Bangor
- Papers of Ieuan Williams, Artist, Menai Bridge, grandson of Rowland Williams, Glyn Derw, Menai Bridge
- Papers of J. H. Moss general grocer, 6 Bridge Street, Menai Bridge
- Papers of John Penrhyn Rowlands Bryn Menai, Brynsiencyn and others
- Papers of Margaret (Megan) Williams, Llanfairpwll
- Papers of Owen Trevor Williams, Holyhead
- Papers of Owen Williams, Hay and Straw Merchant, Garreg Wen, Llanfaelog
- Papers of Pentraeth and District Labour Party
- Papers of Richard Francis Prichard of Llwydiarth Esgob, Llandyfrydog
- Papers of Ronald H. Underwood
- Papers of the late Mr W. O. Williams, Homestead, 47 St. Margarets Drive, Rhyl
- Papers of the North Wales Naturalists' Trust Ltd. / Ymddiriedolaeth Naturiaethwyr Gogledd Cymru Cyf.
- Papers of the Prichard Family, Llwydiarth Esgob
- Papers of the Trescawen Estate
- Papers of the Wesleyan Chapels at Holyhead and Amlwch
- Papers of the Williams family of Llanfairpwll and the Evans family of Holyhead
- Papers of Trevor Eames, Blacksmith, Regent House, Beaumaris
- Papers of William Ellis Jones builder and master carpenter
- Papers of William John Roberts, Bryn Llwyd, Pencarnisiog
- Papers of William Prytherch Parry, the ophthalmic optician and pharmacist at The Pharmacy, Llanfairpwll
- Papers re Ernest Holland Rifleman 302586
- Papers re the creation of a new bowling green in Menai Bridge
- Papers relating to Charities on Anglesey
- Papers relating to Henry Lewis Haynes of Holyhead
- Papers relating to Tyddyn y Waen, Bull Bay
- Papers relating to William Lloyd Lewis, Anglesey Young Farmers Clubs and the National Federation of Young Farmers
- Papers: Alfred Dutton
- Papers: Anglesey Embroiderers and the Llanfairpwll branch
- Papers: Appeal Committee, Footpath, Penrhyn Bach, Llanynghenedl
- Papers: Arts and Crafts Committee of the Royal National Eisteddfod of Wales
- Papers: Beaumaris Grammar School
- Papers: Bod Llwyfan, Clai Lane, Pentraeth
- Papers: Bone Setters of Anglesey
- Papers: Cefn Farm, Beaumaris
- Papers: Chadwick Family of Haulfre, Llangoed
- Papers: Cromlech Estate, pa. Llanfechell
- Papers: Crossville Motor Company Limited
- Papers: D. Stuart Tod
- Papers: Estate of the late Maria Hester Owen, deceased, late of Caerau, Llanfairynghornwy
- Papers: Financial Planning Dept. of British Railways Board
- Papers: Gwynne Ivor Jones and Phyllis Kelson Jones
- Papers: Henry Morgan, Snr of Cadnant Bridge, pa. Llandysilio
- Papers: History of the Lady Eleanor Organ at St. Cybi's Church, Holyhead
- Papers: Holyhead Golf Club
- Papers: Hugh Williams of Llanrhyddlad
- Papers: Ifor Owain Thomas tenor and photographer
- Papers: Ifor Owen Thomas (Ifor Pandy)
- Papers: John Bennett Hughes, tailor, Amlwch
- Papers: John Pritchard, Mariner
- Papers: Joseph Richard Hughes, Holyhead
- Papers: Land and buildings forming part of the Bodednyfed Estate
- Papers: Late Miss Margaret Gaolby, M.A
- Papers: Llangaffo Post Office
- Papers: Llangoed Parish church Restoration Fund
- Papers: Loss of the Royal Charter
- Papers: Malltraeth enclosure award in pa. Llangristiolus, co. Anglesey
- Papers: Marine Workshops, Holyhead
- Papers: Massey family, Cornelyn, Llangoed
- Papers: Mosely Education Commission visit to America
- Papers: Mr R. R. Williams, Porthaethwy
- Papers: Myfanwy Roberts, Collection of Stirrup Family and Llangefni
- Papers: Nellie Owen, Pant, Llanfaethlu
- Papers: Owen family, Fferam Isaf, Llanbabo
- Papers: Penrhyn Mawr Colliery
- Papers: Plas Rhianva [Rhianfa], Llandegfan
- Papers: Porthwen and Cemaes Brickworks and Llanfihangel Quarry
- Papers: Quarry at Penmon and Amlwch Shell Marine Terminal
- Papers: Real estate of the Rev. James Williams of Llanfairynghornwy
- Papers: Relating to John Edwin Truscott who was an engineer on the Holyhead Steam Lifeboat
- Papers: Relating to Llangefni Parish Church
- Papers: Rio Tinto-Zinc Corporation
- Papers: Stanley Sailors Hospital, Holyhead
- Papers: Stein Family, General Drapers, Regent House, Amlwch
- Papers: Treweek family of Amlwch
- Papers: W. D. Evans (cattle dealer), Pen y Bonc, Newborough
- Papers: W. H. Austin (County Water Engineer)
- Papers: William Williams (of Ashanti Company Ltd) of Llanddyfnan
- Papurau Arthur J. Evans, MBE, Llangefni
- Papurau Capel M. C. Ty Rhys, Llangoed
- Papurau Capel Moriah, Cemaes Bay
- Papurau Clwb Cinio Cymraeg Caergybi
- Papurau Cyngor Gwlad Môn / Anglesey Rural Community Council
- Papurau Dewi Jones ag Owen Jones, Benllech
- Papurau Eglwys Bethel, Bedyddwyr, Rhosybol
- Papurau Eisteddfod Gadeiriol Môn
- Papurau Eisteddfod Genedlaethol Frenhinol Cymru, Llangefni
- Papurau Eisteddfod Genedlaethol Urdd Gobaith Cymru
- Papurau Goronwy Prys Jones
- Papurau Grace Hughes, Gwalchmai
- Papurau Hugh Williams Owen, Aberffraw
- Papurau J. Wynne Lewis a Captain J. Owen Lewis
- Papurau Neuadd Gaerwen a Phentre Berw
- Papurau Owens, Tanymynydd, Llanfair Pwllgwyngyll
- Papurau Parch. John Evans ('Iberiad'), Llangoed
- Papurau Parch. Thomas Isfryn Hughes
- Papurau W. Ambrose Pretty
- Papurau William Matthews Williams
- Papurau y diweddar John Evan Jones Llangefni gynt o Half Moon, Brynsiencyn
- Papurau y Parch Huw Llewelyn Williams
- Papurau y Parch Thomas Arthur Jones a`r Cynghorydd Agnes Arthur Jones gynt o Mona Lodge, Amlwch
- Papurau y Parch. Ebenezer Evans a'r Parch. R. Matthews, Penygarnedd
- Papurau y Parch. Thomas Evans, Porth Amlwch
- Papurau Yr Athro Bedwyr Lewis Jones
- Papurau/ Papers Elwyn Gray Hughes, Porthaethwy
- Papurau: Athro John Lloyd Jones / Papers of Professor John Lloyd Jones
- Papurau: Brodyr Parry, Gas Works Yard, Llangefni
- Papurau: Capel Bethesda, Bedyddwyr, Mynydd Bodafon
- Papurau: Capel Gilgal M. C. Bodedern
- Papurau: Capel Hebron, Bedyddwyr, Caergybi
- Papurau: Capel Horeb, Capel y Bedyddwyr Baptist, Llanddeusant
- Papurau: Cysylltiedig a Griffith Williams, 1856 - 1919, yn bennaf llyfrau cyfrifon, 1856 - 1904
- Papurau: Dr Tom Alun Griffiths, Llwyn Idris, Brynsiencyn
- Papurau: Eglwys Methodisitiaid Calfinaidd, Capel Penygarnedd, Pentraeth
- Papurau: Eisteddfod Gadeiriol Môn and A Guide to Amlwch
- Papurau: Megan Môn Prytherch a PAWB (Pobol Atal Wylfa B/People Against Wylfa B)
- Papurau: Owen, Frondeg, Caergeiliog
- Papurau: Rhodri Prys Jones Arddangosfeydd
- Papurau: William Evans (Wil Ifan o Fôn), Pentraeth
- Parish Register: Walton parish, Liverpool concerning Goronwy Owen who was curate there
- Pauper Lunatics - Quarter Sessions papers
- Pencraig Estate, Anglesey, Deeds
- Penillion: Cymraeg am Eglwys Llantysilio
- Penillion: Cymraeg gan Mrs M. G. Griffiths, Holyhead
- The Personal Hymn Book: Richard Ellis, Beaumaris
- Petters family of Amlwch
- Photocopy Article: An Historical and Descriptive Account of the Suspension Bridge constructed over the Menai Strait
- Photocopy Autograph: David Hughes, 1609
- Photocopy Diary: Shipwrecks kept by Stanley Sailors Home 1897 - 1927
- Photocopy Poster: Special rail excursions to Holyhead for the Royal National Eisteddfod of Wales
- Photocopy: Instructions for the Anglesey Constabulary 1857
- Photocopy: Specification New schooner pilot boat to be built at Amlwch in 1874
- Photograph Album from the estate of Mary Elizabeth Liquorice
- Photograph Album of a family on their holidays in England and Wales
- Photograph Album of Richard Hughes, Ty Hen Isaf, Llanerchymedd
- Photograph Album of the Prestwich family of Glenside, Bankhall Lane, Hale, Cheshire
- Photograph Album presented to Myfanwy Chadwick by the Guides, Rangers and Brownies of Anglesey
- Photograph Album: Family holidays at The Point, Rhoscolyn
- Photograph Album: Miscellaneous Anglesey and North Wales
- Photograph Album: Miscellaneous Anglesey views and people
- Photograph Album: Miscellaneous family photos Roberts family
- Photograph Album: Miss Catherine Evans of Tegfan, Alexandra Road, Penmaenmawr
- Photograph Album: Royal Welsh Agricultural Show, Llanelwedd
- Photograph Album: The family of Henllys Hall including the Dwyers and Dwyer Hamptons
- Photograph Albums created by David Owen, Amlwch
- Photograph Albums created by Miss Isla Johnson of Bryn Mel, Llandegfan
- Photograph Albums: Belonged to the Davies family of Treborth
- Photograph of a Lithograph: Woman on ducking stool
- Photograph of a page from an account book (1855) for washing, mending and making clothes at Beaumaris Gaol
- Photograph of a painting of the tea clipper Norman Court
- Photograph of room interior with heavily carved Jacobean table
- Photograph: 'Miners at play' 5 men drinking beer
- Photograph: (after a painting) of the Connaught
- Photograph: 2 girls eating ice creams
- Photograph: 2 girls looking in a clothes shop window
- Photograph: 2 girls with food at a reception in bridesmaids dresses
- Photograph: 2 nuns
- Photograph: [Anglesey Show] Winner's Parade
- Photograph: [Lloyd Family] outside Tregaian Church
- Photograph: [Staff of the County Council] outside the front door of Shirehall, Llangefni
- Photograph: [Staff of the County Council outside the front door of the Shirehall, Llangefni]
- Photograph: [The path to Manod slate quarry]
- Photograph: [Walter O. Jones, Clerk of Anglesey County Council]
- Photograph: A boat nearing a dockside
- Photograph: A Celandine
- Photograph: A Chapel Choir
- Photograph: A child in a boat at Morfa Bychan
- Photograph: A colliery brass band marching along the street
- Photograph: A Council house in Maeshyfryd, Llangefni
- Photograph: A Council house in Maeshyfryd, Llangefni
- Photograph: A cove looking towards Penrhos Pandy
- Photograph: A de Dion Buton Rotonde two seater car belonging to Dr W. H. Williams
- Photograph: A group of men including Rolant o Fôn
- Photograph: A group of smartly dressed gentlemen seated in front of a wall, possibly in Beaumaris Castle
- Photograph: A man selling cows in Gaerwen Market
- Photograph: A man working in a kitchen garden
- Photograph: A pile of shaped iron
- Photograph: A religious procession
- Photograph: A school pupil with an open exercise book and pencil
- Photograph: A Small steamship
- Photograph: A woman walking along the main street of Newbury
- Photograph: A wreck off the Anglesey coast [possibly Missouri]
- Photograph: A young girl in a doorway of a hospital like building
- Photograph: Address of the Chairman, Aldermen and Councillors
- Photograph: Alarm Gun
- Photograph: Alderman Alexander McKillop, Chairman of Anglesey County Council, 1895 - 1896
- Photograph: Alderman O. H. Foulkes, grandfather of O. Glynn Foulkes
- Photograph: Alderman Richard Davies
- Photograph: Alderman Sir Thomas Jones, J. P., 1870 - 1945
- Photograph: Alderman Wm. Edwards, O. B. E. F. G. S. Chairman of Anglesey County Council, 1916 - 1918
- Photograph: An 18th cent. lawsuit plaque from Beaumaris Courthouse
- Photograph: An African mask and two female figure metal candle holders
- Photograph: An altar
- Photograph: An ornamental clock
- Photograph: Anglesey County Council Members and officials taken outside the Shire Hall, Llangefni
- Photograph: Anglesey County Council Members and Officials
- Photograph: Anglesey County Council Staff, taken on the occasion of the Jubilee of the County Council
- Photograph: Anglesey County Council Members and Officials taken on the occasion of the jubilee of the County Council
- Photograph: Anglesey County Council Members and Staff
- Photograph: Anglesey County Council Staff
- Photograph: Anglesey Hunt at Llanfairpwll
- Photograph: Anglesey Hunt hounds being exercised at Red Wharf Bay
- Photograph: Anglesey Hunt members
- Photograph: Anglesey Tandem Club at Treborth Hall
- Photograph: Anglesey Volunteer Home Guard
- Photograph: Anglesey War Agricultural Committee
- Photograph: Archaeological investigation of graves at Gaerwen
- Photograph: Archaeological investigation of graves at Gaerwen
- Photograph: Bagillt Dock Company, Flint
- Photograph: Baptising a child in Capel Smyrna, Llangefni
- Photograph: Baptising a child in Capel Smyrna, Llangefni
- Photograph: Board of Guardians of the Anglesey Union
- Photograph: Brass Band at the Eisteddfod in Llanerchymedd
- Photograph: Brewery/Lemonade Works, Lôn Clai, Llangefni
- Photograph: Bridge over the River Ogwr
- Photograph: Building of Bron y Graig, Llangefni
- Photograph: Carnival float, hospital operation
- Photograph: Cars at Treborth, Bangor
- Photograph: Cat having caught a rat
- Photograph: Chief executives and others at the construction of Anglesey Aluminium
- Photograph: Children and staff of the Maesgarnedd and Bronheulog Children's Homes
- Photograph: Clinker Boats and the Cob, Porthmadog
- Photograph: Clio Training Ship in the Menai Strait
- Photograph: Coach drawn by four horses
- Photograph: Coegnant Colliery
- Photograph: Coegnant Colliery cooling tower
- Photograph: Colliery headgear, south Wales
- Photograph: Commemorative casket with Anglesey County Council crest
- Photograph: Commemorative casket with Anglesey County Council crest
- Photograph: Commemorative casket with Anglesey County Council crest
- Photograph: Cormorants on Ynys yr Adar
- Photograph: Crew of the barque Meinwen
- Photograph: Cyngor Sirol Môn
- Photograph: Detail of a ballustrade
- Photograph: Doll with telephone and broken doll entitled 'Emergency call'
- Photograph: Edward Parry Edwards
- Photograph: Ellis Jones Ellis-Griffith thanking the electors for their support
- Photograph: entitled 'Shavings and Shaver'
- Photograph: Exhibition of books on The Sea held at David Hughes Community Centre
- Photograph: Exhibition of books on The Sea held at David Hughes Community Centre
- Photograph: Ferodo factory near Caernarfon
- Photograph: Fishing Sign
- Photograph: Four prisoners from H. M. S. Tara who were captured by the Senussi
- Photograph: Fox Trap
- Photograph: Grass in the breeze entitled 'Solitude'
- Photograph: Grasses
- Photograph: Grasses
- Photograph: Grasses
- Photograph: Great White Stork seen at Ynys Ferw Fawr near Llangaffo
- Photograph: Group of men at Harlech including William Jones, clerk of the County Council
- Photograph: Group of people outside an unidentified building
- Photograph: Group of people outside a house
- Photograph: Group of workmen in Melbourne, Australia
- Photograph: Group of workmen in Melbourne, Australia
- Photograph: H. M. S. Conway aground in the Menai Strait
- Photograph: H. R. H. the Duke of Kent, at Holyhead
- Photograph: H.M.S. Conway aground in the Menai Strait
- Photograph: Herbert Edward Davies, huntsman
- Photograph: Herbert Edward Davies and William Owen, Lloyds Bank, Beaumaris
- Photograph: Herbert Edward Davies, huntsman and his daughter Dorothy (Doli) Davies
- Photograph: Herbert Edward Davies, huntsman
- Photograph: High Street, Ysbyty Ifan
- Photograph: Horse and Cart outside Penmynydd Post Office
- Photograph: Hugh Thomas, Chairman of Anglesey County Council, 1889 - 1892
- Photograph: Idris holding a cigarette
- Photograph: Inspecting some of the uranium fuel elements at Wylfa Nuclear Power Station
- Photograph: Iron Gibbet with skull from Dylife Montgomeryshire
- Photograph: Isgraig, Llangefni
- Photograph: Items brought back by survivors of H. M. S. Tara
- Photograph: Items from an exhibition about crime and punishment in Beaumaris Gaol
- Photograph: J. Lloyd Griffith, Clerk to Anglesey County Council
- Photograph: J. Rice Roberts, Clerk to Anglesey County Council
- Photograph: Justices of the Peace of Anglesey
- Photograph: L[ewis] Hughes, Chairman of Anglesey County Council, 1897 - 1898
- Photograph: Lace belonging to Major F. N. Carpenter of Garreglwyd, Llanfaethlu
- Photograph: Lady with a horse and dog cart, during 'Horse Power' exhibition
- Photograph: Large group of children outdoors
- Photograph: Large machinery on a road marked Wynns, Newport
- Photograph: Leon Gibson Chief Executive
- Photograph: Letter from King George thanking the North County Councils for their loyal address
- Photograph: Letter from King George thanking the North County Councils for their loyal address
- Photograph: Llanddona Carnival Queen and two attendants
- Photograph: Llangristiolus Drama Group
- Photograph: Man trap
- Photograph: Man Trap
- Photograph: Medals given to Rear Admiral John Leslie Burr, R. N.
- Photograph: Members and [Officers] outside the front door of Shirehall, Glanhwfa Rd., Llangefni
- Photograph: Members and [Officers] outside the front door of Shirehall, Glanhwfa Rd., Llangefni
- Photograph: Members and Chief Officers of Anglesey County Council
- Photograph: Members and officials of Anglesey County Council
- Photograph: Members and officials of Anglesey County Council
- Photograph: Members of Anglesey County Council
- Photograph: Members of Anglesey County Council taken in front of the Shire Hall
- Photograph: Members of the [first] Anglesey County Council
- Photograph: Members of the [first] Anglesey County Council
- Photograph: Members of the [first] Anglesey County Council
- Photograph: Members of the Anglesey County Council tennis team
- Photograph: Members of the Anglesey County Council
- Photograph: Members of the first Anglesey County Council
- Photograph: Members of the first Anglesey County Council
- Photograph: Men bringing a stretcher up cliffs
- Photograph: Men checking electrial circuits
- Photograph: Men checking electrial circuits
- Photograph: Menai Bridge Brass Band
- Photograph: Metal figures with musical instruments and dancing entitled 'fantasy'
- Photograph: Model of H. M. S. Tara's sister ship Cambria
- Photograph: Morfa Bychan
- Photograph: Morfa Bychan
- Photograph: Morris Cowley Car, registration EY 2858
- Photograph: Mr J. W. R. Davies (in Arab dress) at Llangefni Carnival
- Photograph: N60 minibus at Llangoed Church
- Photograph: Officers and Members of Valley Rural District Council
- Photograph: Officers and Members of Valley Rural District Council
- Photograph: Opening of the new R.D.C. offices in Valley
- Photograph: Painting of P. S. Eleanor
- Photograph: Parch. Dewi Jones baptising a child in Capel Smyrna, Llangefni
- Photograph: Parish Stocks
- Photograph: People outside Plas Penlan, Llangefni
- Photograph: People outside the Bull Hotel, Llangefni
- Photograph: Peredur Lloyd, first Chief Executive of the Isle of Anglesey Borough Council
- Photograph: Plas Tudur Flats, Llangefni taken from Bron y Graig
- Photograph: Policeman and a woman outside a County Police Station
- Photograph: Princess Margaret opening Ysgol David Hughes, Menai Bridge
- Photograph: Princess Margaret opening Ysgol David Hughes, Menai Bridge
- Photograph: Profile of a young woman
- Photograph: Queen Victoria disembarking from the Royal Yacht at Holyhead
- Photograph: Richard Owen, Dick Evans and a horse and cart
- Photograph: S. S. Anglia, Holyhead and Dublin Service
- Photograph: S. S. Cambria, Holyhead and Dublin Service
- Photograph: S. S. Scotia leaving Holyhead for Dublin
- Photograph: S.S. Bangor a Port Penrhyn steamer
- Photograph: S.S. Bangor a Port Penrhyn steamer
- Photograph: S.S. Bangor a Port Penrhyn steamer
- Photograph: S.S. Bangor a Port Penrhyn steamer
- Photograph: Scolds Bridle
- Photograph: Seagull on top of a flagpole
- Photograph: Sentinel Patent Locomotive
- Photograph: Shadow of a wire fence
- Photograph: Sheep washing in Wales
- Photograph: Ship [The Ulster]
- Photograph: Shire Horse, Folville Blusterer
- Photograph: Sir Ellis Jones Ellis-Griffith, 1st Baronet, PC, KC
- Photograph: Sir Hugh Owen
- Photograph: Smyrna Congregational Chapel, Llangefni
- Photograph: St. Winifred's Well and Parish Church, Holywell
- Photograph: Steam Engine "Lady of the Lake" at Crewe
- Photograph: Stocks
- Photograph: Survivors of H. M. S. Tara at hospital in Alexandria
- Photograph: Tea pot, egg cup and dolls, entitled 'Playtime'
- Photograph: Tenants celebrating the 21st Birthday of Roger Edwards John Lloyd of Plas Tregaian
- Photograph: The Book of Common Prayer
- Photograph: The Broughton Wellington bomber built by a Welsh crew
- Photograph: The Broughton Wellington bomber built by a Welsh crew
- Photograph: The cast of "The Marriage of Kitty"
- Photograph: The cast of "The Marriage of Kitty"
- Photograph: The engine room of the Cambria with chief engineer John Jones (1850 - 1918)
- Photograph: The family outside Fron, Llangefni
- Photograph: The first airship built on Anglesey
- Photograph: The front of H. M. S. Conway aground in the Menai Strait
- Photograph: The ill-fated airship R.101 on the morning of a test flight at Cardington
- Photograph: The rescue of the men of H. M. S. Tara
- Photograph: The ship Gelart of Beaumaris
- Photograph: The Square at Newborough
- Photograph: The Thetis brought to Traeth Bychan before being taken to Holyhead
- Photograph: The wheels of a railway train on a track
- Photograph: Threshing at an unknown location
- Photograph: Trawsfynydd Nuclear Power Station being built
- Photograph: Unidentified clergymen, Uticia, New York
- Photograph: Unidentified man possibly from Teulu Paradwys
- Photograph: Unidentified members of Anglesey County Council
- Photograph: Unloading of the remains of the first bodies brought out of the submarine Thetis
- Photograph: W. D. Owen, author of Madam Wen plus notes concerning the book
- Photograph: W. J. Rowlands esq, crew member of the H. M. S. Tara
- Photograph: Wall with vegetation
- Photograph: War grave in France of R. R. Jones
- Photograph: War grave in France of R. Lewis
- Photograph: Washing sheep, Dingle, Llangefni
- Photograph: Wm. B. Jones
- Photograph: Wooden Clinker boats, the Moelwyn range and the Cob at Porthmadog
- Photograph: Wooden Stocks
- Photograph: Yr Efail, Gwalchmai
- Photograph: Yr Efail, Gwalchmai
- Photograph: Yr Efail, Gwalchmai
- Photographic Collection: E. Emrys Jones
- Photographic Collection: Sean Hagerty
- Photographic Prints and Slides: Collection of Dr John Glyn Jones, Brynsiencyn
- Photographs and documents relating to Vivian Hewitt and the Parry Family, Bryn Aber, Cemlyn Bay
- Photographs and Glass Negatives: Miscellaneous Anglesey
- Photographs and Information: Working on the chains of the Menai Suspension bridge
- Photographs and Negatives: Construction of Alaw Reservoir
- Photographs and plan: Water dam at Llyn Pwmp, Llangefni
- Photographs and Plans: Shell Amlwch Rhosgoch and Stanlow pipeline
- Photographs and Postcards including Anglesey Beagles
- Photographs by Wm. Hughes photographer, High Street, Llangefni
- Photographs taken by Miss Catherine Evans of Tegfan, Alexandra Road, Penmaenmawr
- Photographs: 22 Dolafon, Llangefni
- Photographs: [The path to Manod slate quarry]
- Photographs: A rope attached to a dockside and people on the deck of a ship
- Photographs: A woman with washing; a child on steps; a church interior, the path to Manod slate quarries
- Photographs: An electricity cut throughout Anglesey after a storm
- Photographs: Anglesey County Council Members and Officials
- Photographs: Anglesey County Council Members and Officials
- Photographs: Anglesey County Council Members and Officials
- Photographs: Anglesey County Council Members and Officials
- Photographs: Anglesey County Council Members and Officials
- Photographs: Anglesey County Council Members and Officials
- Photographs: Anglesey County Council Members and Officials
- Photographs: Anglesey County Council Members and Officials
- Photographs: Anglesey County Council Members and Officials
- Photographs: Anglesey Mixed images
- Photographs: Attempted resuce of a stranded Whale at Pentraeth
- Photographs: Beaumaris Grammar School; Holyhead Post Office Staff and Llangefni W.I. outings
- Photographs: Buildings for Anglesey Council
- Photographs: Cats eating and a horse in a field
- Photographs: Children playing in the street and a house after painting at Dolafon
- Photographs: County Councils' Association message of congratulations to King George V on the 25th anniversary of his accession
- Photographs: Derec Owen
- Photographs: Dragon Times Tourist Paper taken in the main by E. Emrys Jones, Colwyn Bay
- Photographs: Family of Baco'r Aelwyd, Amlwch, Anglesey
- Photographs: Fire damage at the Town Hall Llangefni
- Photographs: Flowers trees and daffodils
- Photographs: Furniture and Implements connected with the Royal Charter
- Photographs: Gloster Saro later Lairds Anglesey Ltd. of Beaumaris
- Photographs: Gwilym Davies from the air showing the construction of the new A55 road across Anglesey
- Photographs: Holyhead County Secondary School and Deeds: Holyhead Steam Laundry
- Photographs: Horses
- Photographs: Includes Soldiers and other people
- Photographs: J. C. Hillmer Collection
- Photographs: Melin Llynnon, Copper Ladies and E. Morgan Tobacco, Amlwch
- Photographs: Members of Anglesey County Council taken before Local Government re-organisation
- Photographs: Military Police standing outside their barracks, Castle Street, Beaumaris
- Photographs: Miscellaneous
- Photographs: Miscellaneous images taken by the Herald
- Photographs: Mr J. Rice Roberts of Rhiwlas, Pentraeth
- Photographs: Part of a collection taken by the late Iorwerth Lloyd of Tyddyn Elan, Llanrug
- Photographs: Peboc Eastman, Llangefni, Anglesey
- Photographs: Royal Naval Airship Station at Mona
- Photographs: Sir Thomas Jones School, Amlwch
- Photographs: South Stack, Holyhead
- Photographs: T. G. Walker Collection
- Photographs: The railway from Chester to Holyhead taken during its centenary year
- Photographs: Thetis re-named as Thunderbolt
- Photographs: Tom Jones of Frongoch Talwrn setting snares [hangs] to catch foxes
- Photographs: Unidentified driveways
- Photographs: Unidentified men including a policeman and soldiers
- Photographs: Ysbyty Ifan and Llanffestiniog
- Plan and View: Chain bridge erecting over the Menai at Bangor Ferry [Menai Suspension Bridge]
- Plan: Llanfairpwllgwyngyll Parish Church
- Plan: Penmon Priory
- Plan: Proposed development at Fferam, Aberffraw for Major Sir George Meyrick Bart
- Plans and Drawings: Ships operated by (L&NWR) and (L&YR) on the Irish Sea crossings between Holyhead and Dublin
- Plans and Specification: Metropolotan Bank, Llangefni
- Plans: Alterations for Garreg Lwyd, Holyhead, designed for Sir R. J. Thomas
- Plans: Alterations to Soldiers Point, Holyhead
- Plans: Conversion of the outlying blocks of Bryn Hafod, Llanerchymedd into dwelling houses
- Plans: Park Mount, Llangefni
- Plans: Relating to Britannia Bridge and Menai Bridge
- Plans: Skerries lighthouse
- Plaque and Medal awarded to Thomas Henry Parry
- Plas Llechylched, Bryngwran papers
- Plas Newydd Collection of Anglesey County Council Papers
- Plate: Toll Houses on the Holyhead Road drawn by G. Turnbull
- Platform Ticket: Llanfairpwllgwyngyll station
- Platform Ticket: Reopening of Llanfair P.G. Railway Station
- Playbills: Amlwch Theatre
- Poor Law Papers
- Poor Rate Book: Llandyfrydog
- Postal Pack: Twelve real photo snap-shots of Llangefni and Anglesey
- Postcard: "Caernarvon Mountains from Beaumaris"
- Postcard: A crowd inside one of the tents at the Anglesey Chair Eisteddfod
- Postcard: A group of women dressed in Welsh costume having tea
- Postcard: Anglesea Welsh woman at tea
- Postcard: Anglesey County Council roadmen with steam roller and lorry
- Postcard: Anglesey Hunt
- Postcard: Anglesey Hunt
- Postcard: Britannia Tubular Bridge
- Postcard: Carnival, May Day. Horse and Cart with banner "Out of Work"
- Postcard: Castles in North Wales
- Postcard: Chair, Anglesey Eisteddfod
- Postcard: Copy illustration of Red Star Line Steamer Lapland
- Postcard: Ffestiniog Choir, Winners Anglesey Eisteddfod
- Postcard: Game of Snooker
- Postcard: H. M. S. Conway aground in the Menai Strait
- Postcard: Interior image of a harvest festival display in an unknown chapel
- Postcard: L. & N. W.R. S.S. Cambria en route Holyhead - Dublin
- Postcard: Lady dressed in Welsh National Costume outside a house in Pandyrodyn
- Postcard: Lord Boston speaking at the Anglesey Eisteddfod
- Postcard: Menai Choral Union at the Anglesey Eisteddfod
- Postcard: Owen Evans distributing the first National Insurance Stamps
- Postcard: People in the street at Bodffordd
- Postcard: Picnic Belan 1910; Bicycle race
- Postcard: Picnic Belan 1910; walking match
- Postcard: Pictorial Map of Anglesey
- Postcard: S. S. Snowdon
- Postcard: S.S. La Marguerite
- Postcard: S.S. La Marguerite
- Postcard: S.S. Snowdon
- Postcard: S.S. Snowdon
- Postcard: S.S. Snowdon
- Postcard: S.S. St. Elvies on the Menai Strait
- Postcard: Ship H.M. Transport, Caledonia
- Postcard: The coat of arms of Harri ap Harri of Madyn Dysw, Amlwch
- Postcard: The Greyhound on the Menai Strait with men in a rowing boat
- Postcard: The S.S. Snowdon having passed Bangor pier on the way to Menai Bridge
- Postcard: The Sanatorium at Shillong built by Miss Davies of Treborth
- Postcard: The ship 'Clio' in the Menai Strait
- Postcard: The ship 'Eilianus'
- Postcard: The ship Primrose Hill
- Postcard: Threshing in Llanfairpwll
- Postcard: Training Ship 'Clio'
- Postcard: Training Ship Clio on the Menai Strait
- Postcard: Views of Anglesey
- Postcard: Views of Anglesey
- Postcard: Yachts moored on the Menai Straits at Beaumaris
- Postcards: Beaumaris; Trearddur Bay; Rhosneigr; Amlwch harbour; Dovecote, Penmon and Cemaes harbour
- Postcards: Concertina of scenes
- Postcards: Teulu Beehive, Llangefni collection.
- Postcards: The Royal Welsh Fusiliers
- Poster of a painting by William McDowell of the School ship Conway
- Poster: Schedule of sailings and fares
- Posters: Advertising Flying Displays sent to Captain Vivian Hewitt Bryn Aber, Cemlyn, Cemaes
- Press Cuttings: Duke of Edinburgh's visit to Indefatigable, H. M. S. Conway Llanfairpwll
- Print: Britannia Tubular Bridge and Menai Suspension Bridge
- Print: Welsh Emblems, Britannia and Menai bridges, Caernarfon and Conwy castles
- Printed Sheets: Particulars of deaths registered in the Parish of Llanddona
- Probate of the Will: Richard Parry of Dafarn newydd, pa. Llanfaethlu, farmer
- Probate of the Will: Robert Williams of Llanfairpwll
- Probate records of the Richards family, Llandyfrydog & Coedana
- Programme to commemorate the Centenary of the Holyhead Breakwater
- Programme: Annual conference of the English Calvinistic Methodist Churches in North Wales
- Programme: Beaumaris Regatta
- Programme: Ceremony of the unveiling of the bronze tablet at a Dedicatory Service and opening of Menai Bridge War Memorial Club
- Programme: Commemorate the Centenary of the English Presbyterian Church, Beaumaris
- Programme: English Presbyterian Church Literary Society
- Programme: English Presbyterian Church Literary Society
- Programme: Events to be held at Llangefni in celebration of Peace Day
- Programme: Firework display to welcome the return of Queen Victoria and Prince Albert to Holyhead
- Programme: Grand Bazaar to be held in the Rev. Christmas Evans Memorial Chapel, Llangefni
- Programme: Regal Cinema, Beaumaris
- Programme: The Anglesey County Federation of Women's Institutes Jubilee, 1915 - 1965
- Programme: The Marriage of Kitty, a comedy performed by the Marquis of Anglesey's Company at the Gaiety Theatre.
- Programme: Visit of Their Majesties King George VI and Queen Elizabeth to Caernarvon Castle
- Programmes for productions performed by the Marquis of Anglesey's Gaiety Theatre, Anglesey Castle
- Programmes: Aladdin to be performed by Mr. Alex Keith's London Company
- Programmes: Menai Bridge Brass Band
- Prosiect/Project: Dyddiaduron heddiw - Hanes yfory/Todays diaries - tomorrows history
- Prospectus: Issue of shares for the Llangefni Electric Light and Power Company Ltd.
- Prospectus: Robert Roberts & Co., Ltd., Tea & Coffee Merchants
- Public Assistance Committee (Anglesey) Records
- Railway Papers - Quarter Sessions papers
- Railway Papers - Quarter Session Papers
- Railway Warrant: Issue tickets to H. Co. Casuals, 6 Royal Welsh Fusiliers for a journey from Menai Bridge to Aberystwyth
- Rating Records of the Valuation Office / District Valuer
- Ready Reckoners
- Receipt: Mr Thomas Rodgers Pentraeth from W Mostyn & Co
- Receipted Bill: T. and R.Williams wholesale and general ironmongers, Dinorben House, Llanerchymedd
- Receipted Bills: Household goods supplied to the Sutton family, St. Brelades, Marianglas
- Receipts: Messrs E. W. Timothy & Son, Wholesale & Retail Wine & Spirit Stores, Menai Bridge
- Record Book: Dinmor Park Quarries
- Record Disc: Recordiad anerchiad y Cadeirydd. Mr J. Howell Hughes, Eisteddfod Genedlaethol Cymru, Sir Fôn
- Record: Mining operations for the stone required for the Breakwater at Holyhead
- Records of Anglesey Soroptimist Club
- Records of Richard Jones, currier, Beaumaris
- Records of William Thomas of Llanrhuddlad and Liverpool
- Records relating to the Conant, Grimshawe and Williams families, and some articles relating to the Stanley's of Penrhos
- Records: Aberffraw Branch of the Workers Union
- Records: Alaw Sailing and Canoeing Club
- Records: Anglesey Branch of N. A. L. G. O
- Records: Anglesey Defence Action Group
- Records: Anglesey Technical Society
- Records: Anglesey Youth Clubs
- Records: Beaumaris Gaol
- Records: Central Stores, Aberffraw
- Records: Dinmor Quarries Ltd. Penmon
- Records: Electrical Association for Women, Holyhead and Beaumaris branch
- Records: G. Pritchard Emporium Funeral Directors, Joiners and General Merchants
- Records: General Practice, Doldir, Glanhwfa Rd., Llangefni
- Records: Holyhead Harbour Bye Laws
- Records: Holyhead Motor Ambulance Committee
- Records: Holyhead Salvation Army
- Records: Inner Wheel Club of Llangefni, Anglesey
- Records: Llangwyllog Railway Station
- Records: Menai Bridge and Llandegfan District Nursing Association
- Records: Newborough Mat Makers Association
- Records: North Wales Chronicle Co. Limited, Y Clorianydd office, Llangefni
- Records: Pentraeth Women's Institute
- Records: Port of Beaumaris Custom and Excise
- Records: Relating to Malltraeth and Corsddaugau Marsh
- Records: Sea Kayak Classic Race, Anglesey
- Records: Stanley Sailor's Hospital, Salt Island, Holyhead
- Records: Thomas Williams (draper), Aberffraw
- Records: William Edwards, chemist, Llangefni
- Records: Williams Family, Trefdraeth
- Records: Ymddiriedolaeth Cerdd Ynys (Anglesey Music Trust)
- Recruiting Poster: "Remember Belgium Enlist Today"
- Red Wharf Bay Sailing Club, Anglesey
- Register of Baptisms: Chapels Salem, Bodedern and Rehoboth
- Register of Cases: H. Jas. Jones, midwife, Nurse's cottage, Llanddona
- Register of Notifications: Police or insurer of seriously damaged motor vehicles
- Register: Baptisms of non-conformists
- Register: Hours of attendance at training and operational duties for Home Guard
- Register: Llanerchymedd Druidical Friendly Society
- Register: Men enlisted in the Territorial Force Association, Anglesey Detachments
- Registers of Marriages: Wesleyan Chapel, Llangoed; Capel Gwynfa Newhaven Road, Holyhead
- Registrar General of Shipping and Seamen (Beaumaris, Anglesey) Records
- Regulations: Issued by Anglesey County Council re. dipping sheep against Sheep Scab
- Release: Lands in Parish of Rhoscolyn and Parish of Cerrigceinwen
- Reminiscences: Life as a medical man by Dr O. J. Parry Edwards, Valley
- Rent Receipt: Andrew Laurie, agent for Sir Richard Henry Williams-Bulkeley, to Richard Williams Tynycae Llangwyllog
- Report Books: Kept by Coastguard Officers at Cemaes
- Report: Borough of Newborough, Anglesey
- Report: Midwifery Service in Anglesey with suggestions for its improvement and extension
- Report: Tourism on Anglesey Ynys Môn Borough Council
- Reports and Diaries: Relates to the sinking of H.M.S. Tara
- Reports: Anglesey County Council Emergency Homeless Plan
- Reports: Anglesey Marine Terminal Bill
- Reports: Annual Report of Medical Officer of Health for Anglesey
- Research Papers of Frank A. Barnes, University of Nottingham
- Research Papers: Religious houses on Anglesey
- Research Papers: Tim Hale for books about W.D. Owen and George Cockram
- Return of Land Ownership
- Return showing the population, crime, pauperism, and the number of public houses in each parish in Anglesey
- Return: Aggregated abstract of acreage returns for the County of Anglesey
- Returns: Duties on Land Values and plans made by the London and North Western Railway company
- Rev. Hugh Hughes, Beaumaris, Family Papers
- Rhaglen Gwasanaeth: Claddu Parchedig Thomas Charles Williams
- Rhaglen Swyddogol: Eisteddfod Genedlaethol, Urdd Gobaith Cymru, Porthaethwy
- Rhaglen: Ail agor Neuadd y dref wedi'r gwelloannau diweddaraf gan Y Gwir Anrhydeddus Cledwyn Hughes A. S
- Rhaglen: Cwmni'r Genhinen yn perfformio Hen Wr y Mynydd
- Rhaglen: Cyfarfodydd Sefydlu Y Parch. Ithel Gibbard yn weinidog Eglwysi Annibynnol Siloam, Talwrn a Smyrna Llangefni
- Rhaglen: Cymdeithas Lenyddol Undebol Porthaethwy
- Rhaglen: Cyngerdd Uwchraddol gan Gor Ewyllys Da Cymru'r America
- Rhaglen: Dewch i'r Llwyfan; Rhaglen: Eisteddfod Genedlaethol Urdd Gobaith Cymru; Cerdyn: Gwasanaethau'r Pasg a Chylchgrawn: Y Ddolen
- Rhaglen: Gwasaneth a ddarlledir, Eglwys Moriah M. C. Llangefni
- Rhaglen: Noson Dathlu Gwyl Dewi yn Neuadd y dref, Llangefni
- Rhaglen: Primin Menai
- Rhaglen: Seremoni Agoriadol Ysgol Gynradd Cemaes
- Rhaglen: Sioe Porthaethwy
- Rhaglen: Trefn y Gwasanaeth wrth y Gofeb ac yn Nghapel Moriah M. C. Sul y Cadoediad, Llangefni
- Rhaglenni: Gwyl Ddrama Genedlaethol Cymru, Llangefni
- Rhaglenni: Y Ford Gron Amlwch yn Dathlu Dydd Gwyl Dewi
- Rhestr Gwasanaeth Cynfilwyr a Chynforwyr plwyf Bodedern yn y Rhyfel Mawr 1914 - 1919 gan Harry Hughes Williams
- Rhestr Testunau: Eisteddfod Gendlaethol Urdd Gobaith Cymru
- Rhestr-lyfr Y Methodistiaid Wesleyaidd Llangefni
- Rhyd Stores, Talwrn, Papers
- Robert Jones, Amlwch, Papers
- Roll Book: Sergeant T. O. Jones, section commander in the Territorial Force, no. 4 Section, H. Company 6th Battalion, R. W. Fus.
- Rotary Club, Holyhead, Anglesey
- Rough Summary of Title Valuation: One of 3 new shops built by Mr Harrison of Rockferry
- Royal Anglesey Yacht Club, Beaumaris
- Royal British Legion: Llanddeusant and Llanfaethlu Branch, Records
- Royal National Lifeboat Institution (Anglesey) Archive
- Rule Book: British Railways
- Rules: Members of the Straits Country Club, Plas Llanfair Hotel
- Sailing Bill: August and September Sailings of La Marguerite
- Sale Catalogue: Livestock at Bodior, nr. Holyhead
- Sale Catalogues and Plans: Auction of land, Anglesey
- Sale Schedule: Relating to sixteen freehold building sites
- Sales and Legal papers relating to the Marquesses of Anglesey
- Sample Postcard: "La Marguerite" off Beaumaris
- Saunders Roe
- Scanned Copies: Photographs of H. M. S. Conway being towed and aground
- Scheme: Made by the councils of Carnarvon, Anglesey, Denbigh, Flint approved by the Board of Education
- School Certificate: Mary Jane Ellis on passing the 4th Standard Examination
- School Text Books: Miscellaneous box of Welsh and English text books for use in primary schools
- Scrap Book: Press cuttings Llangefni
- Scrapbook: Benllech W. I. to commemorate W. I. Jubilee Year
- Scrapbook: Cemaes Bay W. I. to commemorate W. I. Jubilee Year
- Scrapbook: Collected by Llanddona W. I. to commemorate the W. I. Jubilee Year
- Scrapbook: Collected by Menai Bridge W. I. to commemorate the W. I. Jubilee year
- Scrapbook: Collected by Penmyndd W. I. to commemorate the W. I. Jubilee Year
- Scrapbook: Events in and around Beaumaris
- Scrapbook: Llandegfan Women's Institute
- Scrapbook: Llanedwen W. I. to commemorate W. I. Jubilee Year
- Scrapbook: Trefdraeth W. I. to commemorate the W. I. Jubilee Year
- Sea Charts: The coast of Wales
- Seiriol Region Newsletters
- Sheet: History of [Burwen] Cemetery, 1864 - 1901
- Sheet: Summary of consultations re public inquiry into proposed nuclear power station
- Sheets: R. N. L. I. Bull Bay Life Boat Station statistics
- Sheets: Statistical report of the Milk Marketing Board Cattle Breeding Centre, Llangefni
- Sheets: Taken from the front of the Bible which was used as an exhibit in the Beaumaris Gaol Chapel, Anglesey
- Shipping Records: Sea going vessels and Anglesey
- Shop Bills and Receipts: Mainly from Amlwch
- Short History: Tyrer family Amlwch 18th century by E. Terrar a descendant
- Silcock Farmers Diaries and associated paperwork
- Sketch: Proposed alterations to Bodedern C. M. Chapel
- Slides and Photographs: Recording excursions undertaken by the Anglesey Antiquarian Society
- Song Sheet: Founders Day
- Soundings: Holyhead Inner Harbour
- Souvenir Booklet: Prichard Jones, Institute, Newborough opened by Sir Richard Williams-Bulkeley Bart Lord Lieutenant of Anglesey
- Souvenir Magazine: Visit of H. R. H. the Prince and Princess of Wales to North Wales
- Speech: Occasion of the presentation of the charter of Ynys Môn Borough
- Staff Register: Holyhead Railway
- State Papers: Shipwreck of the Mary Yacht grounded on the rocks of Skerrys
- Statement: Number of paupers admitted and discharged from the Bangor and Beaumaris Union Workhouse
- Statement: Work executed, materials and plant provided for Holyhead Railway and Sea Walls Contract
- Statutory Declarations: Made by Hugh Hughes of Tynygoeden, Newborough, retired master mariner
- Stump of a Ticket: Third class travel return journey from Llanerchymedd to Llangefni
- Summons: Richard Bennett esq., High Sheriff of Anglesey
- Surrender: Life Estate in an island called Skerries
- Survey: Anglesey Playing Fields carried out by the rural community councils
- Survey: Henllys, demesne lands in the pa. Llanfaes, co. Anglesey
- Survey: Llynnon Estate in pa's Llandduesant, Llanbadrig, Amlwch, Llanfachraeth
- Survey: Staying visitors in Anglesey conducted by Social Surveys (Gallup Poll) Ltd., for the British travel Association
- Survey: Village Halls in Anglesey conducted by the Rural Community Councils
- Sydney Lloyd (Anglesey) Papers
- T. C. Simpson and Parry family, Llangefni, Papers
- Taflen: Cyfweliad gyda Mr Russell Price am Siop Stein, Regent House, Amlwch
- Taflenni Amrywiol
- Tape Recording: B. B. C. broadcast on the Welsh Home Service entitled Future of Anglesey
- Tapestry Sampler: Llangristiolus National School
- Tapestry Sampler: Made by Elinor Edwards aged 13
- Tapestry Sampler: Made by M. J. Thomas
- Tapiau casét yn ymwneud ag Ynys Môn
- Technical Drawing: CO2 Bell Striker Modification Menai Lighthouse Trywn [Trwyn] Du
- Telegram: Ordnance Barscough, Ormskirk to Commander R. W. F., Menai Bridge
- Testimonials on behalf of Miss Catherine Ellen Williams, Prys Iorwerth, Llanfairpwll who was District Nurse
- Testynau ac Amodau: Gwyl Lenyddol a Cherddorol Teml Berw gan y Urdd Annibynol y Temlwyr Da
- Thomas Rogers, of Pentraeth papers
- Ticket and Envelope: Grand Musical Festival on the occasion of the opening of Holyhead Town Hall
- Ticket: [Purportedly the first to be issued on the Menai Suspension Bridge]
- Ticket: Anglesey Chair Eisteddfod, Llangefni
- Ticket: Issued by the Ministry of Transport at Menai Bridge to Mr. F. H. Hope owner of reg. no. EY 6381
- Ticket: Issued by the Ministry of Transport at Menai Bridge to Mr. T. O. Jones owner of reg. no. EY 4114
- Tintype and Negatives: Miscellaneous Anglesey and Gwynedd
- Tithe Commutation: Parishes of Ceirchiog, Llanbeulan, Llechyched, Llanfaelog
- Tithe Rent Charge Account Books: Anglesey
- Title Deeds and Correspondence: Land and properties in pa. Amlwch, Llandegfan, Llanfaes
- Title Deeds: 37 Church Street, Beaumaris and land at Bryn Afon, Penmon
- Title Deeds: Clorach, pa, Llandyfrydog and conveyance for Cae'r Gongl
- Title Deeds: Family of John Griffith Lewis of Llanddyfnan
- Title Deeds: Properties in Llanerchymedd and surrounding parishes
- Title Deeds: Property in St. Cybi St. and a property Kings Road, Holyhead
- Title Deeds: To 18/29 Market St., Holyhead, Anglesey
- Tocyn Rheilffordd: Diwrnod olaf Lein Gaerwen - Amlwch
- Tocynnau: Aelodaeth a Rhaglenni Cymdeithas Cymru Fydd, Caergybi
- Tocynnau: Noson Lawen Croeso 69 yn Ysgol David Hughes
- Token for Parys Copper Mine
- Toriad Papur Newydd: Anglesey's First County Council
- Toriad Papur Newydd: Barddoniaeth i ddathlu canmlwyddiant Morglawdd Caergybi
- Toriad Papur Newydd: Cynnwys penillion a gyfansoddwyd gan Mr John Griffiths, Bryncla
- Toriad Papur Newydd: Erthygl dau V. C. Môn
- Toriad Papur Newydd: Herald Môn, Ffarwel i'r Hen Ysgol, yn dangos lluniau o gynulliad olaf y plant yn hen ysgol Ramadeg Beaumaris
- Town Trail: Beaumaris
- Trades Directory: North and South Wales
- Transcripts of Register: Llanfair-yn-Neubwll 1677 - 1841
- Transcripts: Parish Registers Llanddyfnan
- Transript: Census returns for Llanddyfnan parish 1871
- Trawsgrifiad: Dyddiaduron a llythyrau Margaret Ann Bulkeley (Mehefin 1886 - 1887 Medi)
- Troughton Family Papers
- Trustees of Edmund Ashworth Papers
- Tudalen: Barddoniaeth gan Mrs M. Griffiths o Gaergybi
- Tudalen: Barddoniaeth gan Mrs M. Griffiths o Gaergybi
- Tudalen: Barddoniaeth gan Mrs M. Griffiths o Gaergybi
- Tudalennau a Thaflennu am Hen Feirdd yn Llys Aberffraw, marwnadau a thaflen Gwasanaeth Dadorcuddio Cofeb i goffhau Charles
- Twrcelyn Rural District Council Records
- Typed Sheets: History of the Holyhead Lifeboat 1828 - 1967
- Typed Sheets: Listing those buried within St. Cybi's churchyard, Holyhead
- Typelists: Baptisms and Burials, Llangefni 1783 - 1972
- Typescript Extract: Baptism Register, Penysarn 1807 - 1837
- Typescript History: Park School Holyhead, written by the headmaster to celebrate the school's centenary
- Typescript: Book Whalers of Anglesey by Alun Owen
- Typescripts: Short history of Anglesey; and Traethawd ar Henafiaethau Llanedwen
- Vaccination Register
- Valley Rural District Council Records
- Valuation and Survey: Farm called Ty Croes Bach
- Various Deeds: Coedana Issa pa. Coedana, co. Anglesey
- Vehicle Licensing Registers
- Vehicle Licensing Registers
- Vehicle Licensing Registers and Weights and Measures Cash Book
- Victorian Cartoons: An interesting event, cooking made easy and one with an excellent character
- Video Tapes: Carnival and Royal British Legion Remembrance Service, Llangefni
- Visitors Book: Elin's tower, Holyhead
- Visitors Book: Llandegfan Parish Hall
- Volumes: Builder's Day Books
- W. G. Simpson Papers
- Wages Book: Breakwater Quarry, Holyhead
- Wages Sheets and Conveyance Notes: Dimnor Quarries Ltd, Penmon
- Warrant of Armorial Arms and election
- Watercolour Painting: "Waterman's Arms" by William Meredith
- Watercolour Painting: Anglesey cottages by William Meredith
- Welsh Agricultural Organisation Society Records
- Welsh Church Act
- Welsh Water Authority, Anglesey, and Malltraeth Marsh Commission Papers
- Wern Estate, Llanddona
- Will: Richard Williams of Porthaethwy co. Anglesey, gent
- William Thomas and Sons, Amlwch Port, Papers
- Yale and Hardcastle Collection of Anglesey Papers