Gwynedd Archives Service - Caernarfon Record Office / Gwasanaeth Archifau Gwynedd, Archifdy Caernarfon
- Web
- Telephone
- Address
- Shirehall Street, Caernarfon, LL55 1SH, Wales, United Kingdom
- Opening Hours
- Monday-Tuesday closed; Wednesday 09:30-12:30/13:30-19:00; Thursday-Friday 09:30-12:30/13:30-17.00
- Accessible
- Yes
List of Collections(View as Search Results)
- The 1911 Investiture of The Prince of Wales
- The Advisory Committe of the Glaslyn Rural District for Military Exemption
- The Arvonian
- The Beehive Hotel Family Photographic Collection
- The Caernarfon and Anglesey Ferry Collection
- The Caernarfon Rotary Club Collection
- The Criccieth Dramatic Society
- The Independent Order of Good Templars, Ceunant Coch Lodge
- The Inner Wheel Club, Caernarfon
- The Investiture of the Prince of Wales
- The Majestic Cinema, Caernarfon.
- The Northern Ceramic Society Newsletters No. 141 and 143
- The Old Dominicans Association
- The Railway Executive - London Midland Region
- 'The Roads of North Wales 1750-1850' by A.H. Dodd
- Abraham Foulkes Papers
- Abstract of Title
- Abstract of Title
- Abstract of Title
- Account Book
- Account Book
- Account Book
- Account book
- Account Book for Penmaenmawr and Llanfairfechan 1d. in the Hospital Fund
- Account Books
- Account Books
- Account of a trip to Wales and Dublin
- Accounts Ledger
- Addroddiad Blynyddol
- Adroddiad
- Adroddiad Ariannol Eglwys, Penisarwaen
- Adroddiadau Blynyddol Capel Cefnywaun, Deiniolen
- Adroddiadau Blynyddol Capel Soar, Penygroes
- Advertising Leaflet
- Albert Evans-Jones (Cynan)
- Album of Photographs
- Album of Photographs of Nefyn
- Album of Photographs of Ships
- Albwm o Doriadau Papurau Newydd
- Albwm o Luniau Amrywiol o Sir Gaernarfon
- Albwm o Luniau o Olygfeydd Amrywiol o Eryri.
- Angladd ym Mhorthmadog
- Angling Competition Posters
- Apprenticeship Indenture
- Arfon Borough Council Retirement Club
- Arfon W.I. Millennium Scrapbook
- 'Argraffnodau o Ddyffryn Nantlle' / 'Impressions of the Nantlle Valley'
- Arthur Lockwood's Notebooks
- Article
- Article
- Articles of Partnership
- Astudiaeth Gymdeithasol o Ardal Rhiw gan Carroll Hughes
- Athrawon Sir Gaernarfon
- Athritis Research Society
- Aviation Research on Llyn Peninsula 1937 - 1944
- Bangor Borough Council Records
- Bangor Cathedral
- Bangor City Football Club Items
- Bangor Diocesan Council for Mission and Unity Records
- Bangor English Methodist Circuit records
- Bangor Items
- Bangor Items
- Bangor Library Collection
- Bangor Library Collection: Photographs
- Bangor Market and Institutions Company Ltd. records
- Bangor National Eisteddfod
- Bangor Public Library papers and printed ephemera
- Bangor University Engineering Department
- Bangor Y.M.C.A.
- Bangor, Caernarfon and Tregarth Wesleyan Methodist Circuits Papers
- Baptism and Burial Register
- Baptism Register
- Best Wishes Telegrams
- Bill
- Bill from Owen Roberts, Ironmonger
- Bill Head of J Ethall & Son
- 'Bittersweet: Sugar, Tea and Slavery, A Story of Wales and Slavery'
- Blacksmith's Bill
- Bodfan Institution Records
- Boduan Lodge
- Book
- Book - Census of Religious Worship in England and Wales
- Book of Music
- Booklet
- Booklet
- Booklet
- Booklet
- Booklet
- Booklet 'An Artist in the Quarries'
- Booklet about Dorothea Quarry
- Booklet of Newspaper Cuttings
- Booklet of Sketches of Beddgelert
- Booklet on the Waterloo Hotel, Betws-y-Coed
- Borough of Pwllheli Sewage System
- Borth y Gest New Church 1912 - St Cyngar's Church 2012
- Borth-y-Gest W.I. Collection
- Borth-y-Gest W.I. Photographs
- Breese Jones and Casson Additional Papers (Trefan and Hafodgaregog Papers)
- Brenhinesau Carnifal
- Britannia Foundry, Porthmadog
- British and Foreign Bible Society, Bangor Branch
- British Legion Photographs
- British Legion Records
- Bron y Fuches Records
- Brunswick Iron Works
- Bryn Bela Collection, additional deposit
- Bryn Bela Photographic Collection, additional deposit
- Bryngolau (Abererch) Papers
- Brynrefail and Rhostryfan Photographs
- Brynrhos Sunday School
- Bryntirion (Bangor) Deeds
- Bundle
- Bundle of Deeds
- Bundle of Deeds
- Bundle of documents relating to the Wartki family.
- Bundle of Invoices and Receipted Bills
- Bundle of Miscellaneous Invoices
- Bundle of Receipts
- Bundle of Receipts
- Bundle of Rent Cards for Council Properties in Caernarfon
- Bwndel o Ddogfennau Parthed William Humphreys, Gynt o Pantiau, Rhosgadfan.
- Bwndel o Fwydleni a Rhadlenni
- Bwndel o Llythyrau yn Anfon Arian at Maer Caernarfon Ifor Bowen Griffith
- Caernafon County School Photographs
- Caernarfon Castle
- Caernarfon Football Clubs Photographs
- Caernarfon Harbour Trust Records
- Caernarfon Library Collection
- Caernarfon Probus Club Photographic Collection
- Caernarfon Royal Naval Reserve & Coastguard Records
- Caernarfon Tangent Club Collection
- Caernarfon Town Football Club Papers
- Caernarfonshire County Architect's Plans
- Caernarfonshire County Council Archives, Papers of the Air Raid Precautions and Civil Defence Departments
- Caernarfonshire County Council archive, Clerk's Department records
- Caernarfonshire County Council, Caernarfonshire War Agricultural Executive Committee papers
- Caernarfonshire County Council Photographs
- Caernarfonshire Land Tax Assessment Records
- Caernarfonshire Official Maps and Plans
- Caernarfonshire Quarter Sessions Licensing Records
- Caernarfonshire Quarter Sessions Records
- Caernarfonshire Quarter Sessions, Gamekeepers' Deputations
- Caernarfonshire Shipping Registers
- Caernarfonshire/ Gwynedd County Councils Social Services Department Records
- Caernarvon Union Records
- Caernarvonshire and Anglesey Infirmary Records
- Caernarvonshire County Council, Land Agent's Records and Caernarfonshire Rivers Catchment Board Records
- Caernarvonshire Quarter Sessions County Gaol Records
- Caernarvonshire War Agricultural Committee Maps
- Cahir, co. Tipperary, Estate Papers
- Canolfan Gymdeithasol Tudweiliog Deeds
- Capel Bethel Rachub a Capel Carmel, Llanllechid
- Capel Bethesda, Bethesda/Bethesda Chapel, Bethesda
- Capel Caersalem, Caernarfon
- Capel Ceunant, Ceunant, Llanrug
- Capel Croes y Waen, Waunfawr.
- Capel Mawr Llanrug and Brynrefail School Photographs
- Capel Pen y Groes, Tregarth
- Capel Y Tabernacl (Bedyddwyr), Pwllheli
- Capeli Pen y Maes a Berea, Cricieth
- Capt. Edward Williams of Ty Gwyn, Talsarnau Papers
- Captain Evans Collection
- Captain Robert Thomas Additional Papers
- Captain Thomas John Evan of Criccieth
- Captain Thomas Papers
- Cardiau Post
- Cardiau Post
- Cardiau Post
- Cardiau Post
- Cardiau Post
- Cardiau Post Amwyriol
- Carmel Chapel, Llanllechid and Bethesda Chapel, Bethesda
- Carreg y Llam Holiday Fund
- Carter, Vincent & Co., Solicitors, Papers
- Casgliad Amrywiol
- Casgliad Amrywiol
- Casgliad Amrywiol
- Casgliad Amrywiol
- Casgliad Amrywiol
- Casgliad Amrywiol
- Casgliad Amrywiol
- Casgliad Amrywiol
- Casgliad Amrywiol
- Casgliad Amrywiol/Miscellaneous Collection
- Casgliad Amrywiol/Miscellaneous Collection
- Casgliad Amrywiol/Miscellaneous Collection
- Casgliad Amrywiol/Miscellaneous Collection
- Casgliad Amrywiol/Miscellaneous Collection
- Casgliad Amrywiol/Miscellaneous Collection
- Casgliad Amrywiol/Miscellaneous Collection
- Casgliad Amrywiol/Miscellaneous Collection
- Casgliad Amrywiol/Miscellenous Collection
- Casgliad Apêl y Galon Gogledd Orllewin Cymru
- Casgliad Awel Eryi
- Casgliad Bachwen, Clynnog
- Casgliad Capel Annibynnwyr Rhoslan
- Casgliad Capel Bethel, Bryncroes
- Casgliad Capel Boduan
- Casgliad Capel Caersalem, Caernarfon
- Casgliad Capel Caersalem, Caernarfon
- Casgliad Capel Disgwylfa, Deiniolen
- Casgliad Capel Disgwylfa, Deiniolen
- Casgliad Capel Engedi, Caernarfon
- Casgliad Capel Mawr Llanrug
- Casgliad Capel Talysarn (John Jones), Plwyf Llanllyfni
- Casgliad Capel Tanrallt
- Casgliad Capel y Fron, Nefyn
- Casgliad Clwb Iotio Brenhinol Cymru
- Casgliad Clwb y Bont, Pwllheli
- Casgliad Cyngor Chwaraeon Arfon
- Casgliad Eglwys Annibynnol Bangor
- Casgliad Eisteddfodau Cenedlaethol Pwllheli
- Casgliad Eisteddfodau Lleol
- Casgliad Ellis Davies
- Casgliad Emlyn Evans
- Casgliad Fferwyr Ifanc Eryri
- Casgliad Geoff Banks
- Casgliad Griff R. Jones, Adneuaeth Ychwnaegol
- Casgliad Lluniau o J.R. Jones, Bethesda
- Casgliad Lluniau o R.O. Roberts
- Casgliad Meinwen Parry, Bangor
- Casgliad Merched y Wawr Brynaerau
- Casgliad Merched y Wawr Chwilog
- Casgliad Merched y Wawr Golan
- Casgliad Merched y Wawr Morfa Nefyn
- Casgliad Merched y Wawr, Pwllheli
- Casgliad Mr Tommy Morris/Mr Tommy Morris Collection
- Casgliad Mrs Ellen Williams
- Casgliad Myfanwy Morris
- Casgliad Neuadd Bentref Y Groeslon
- Casgliad o Lythyrau/Collection of Letters
- Casgliad Owen a David Lloyd (Ychwanegol)
- Casgliad Plaid Cymru
- Casgliad Pwyllgor Lles y Deillion Ardal Porthmadog a Chricieth/Porthmadog and Cricieth Blind Welfare Group Collection
- Casgliad Rees Jones
- Casgliad Rhaglen
- Casgliad Sefydliad y Merched Menai /Y Felinheli
- Casgliad Sefydliad y Merched, Edern/Edern Women's Institute Collection
- Casgliad Ty Gwydyr , Bangor
- Casgliad Tynyffordd
- Casgliad W. Penry Williams/W. Penry Williams Collection
- Casgliad William Jones
- Casgliad William Jones, Moelfre, Aberdaron
- Casgliad Yr Hen Aelwyd, Bethesda
- Casgliad Ysgol Babanod Porthmadog
- Casliad Amrywiol
- Castell Slate Quarry, Plasgwynant, Beddgelert, Papers
- Castle Square Presbyterian Church, Caernarfon, Records
- Catherine Jones, Pwllheli Photographic Collection
- Cefn, Bontnewydd
- Cefnamwlch Estate Papers
- Cerdd a Cerdyn Goffa Hannah Thomas
- Cerdd gan Anthropos
- Cerdyn Coffa
- Cerdyn Coffa Willie Williams Brynhyfryd Terrace, Carmel
- Cerdyn Cyfarfod Llenyddol Pwllheli
- Cerdyn Post
- Cerdyn Post
- Cerdyn Post
- Cerdyn Post
- Cerdyn Post
- Cerdyn Post 'Plant Diwygiad Llanllyni [sic] 1904-1905'
- Cerdyn Post o'r Awyr yn Dangos tref Caernarfon
- Certificate Awarded by the Royal Humane Society
- Certificate of Acknowledgement
- Certificate of Competence of Rowland Jones
- Certificate of the Order of the Crown (Golden Palms)
- Changen Plaid Cymru, Pwllheli
- Charity Commission, Gwynedd charity accounts
- Charles Stephen Darbishire Family Collection: Photographs
- Charles Stephen Darbishire Family Collection
- Christmas Cards
- Classical Association Collection Additional Deposit
- Climber's Club Collection: Sound Recording
- Clothing Ration Books
- Coach and Bus Week Magazine
- Coed Helen Estate
- Coed Helen Papers
- Cofeb Gwilym E. Jones yn Nhalysarn.
- Cofeb y Dewrion
- Cofnodion Capel Bryn Menai M.C., Y Felinheli
- Cofnodion Capel Brynrhos (MC), Y Groeslon
- Cofnodion Capel M. C. Waunfawr
- Cofnodion Capel Mawr Talysarn
- Cofnodion Ffederasiwn Cymdeithasau Hanes y Sir
- Cofnodion Sefydliad y Merched Tudweiliog/Tudweiliog Women's Institute Records
- Coleg Menai Collection
- Coliseum Cinema, Porthmadog
- Collection of Documents relating to Felin Faesog, Clynnog
- Collection of papers relating to the Evans family of Penarfynydd, Llanfaelrhys
- Collection of Research Material
- Constable Ellis Deeds
- Conveyance
- Conveyance
- Cookery Training Ledger
- Correspondence and Papers relating to John Lewis Jones of Nefyn
- Correspondence of the Morris Family
- Correspondence relating to the Ian Cox Fund
- County Library Papers and Miscellanea
- Creditors Ledger
- Criccieth Area Photographs
- Criccieth Items
- Cricieth W.I. Photographic Collection
- Criw o Weinidogion
- Crossville Bus Photographs
- Crossville Buses Items
- Crosville Bus Company Collection
- Cwm Machno Slate Quarry, Penmachno
- Cwm-y-Glo Choir and Orchestra
- Cyfarfodydd Cenhadol y Chwiorydd Dosbarth Eifionydd
- Cylchlythyr
- Cymdeithas Lenyddol Undebol Bethel
- Cymdeithas y Nyrs Dosbarth Fourcrosses
- Cymryd Deeds
- Daily Post
- Darlith Canmlwyddiant Capel Nebo Llanllyfni
- Darlith E.J. Williams
- Darlith gan Ffrancon Evans am Ardal Llanllechid
- David Lloyd George a Tywsog Edward, Tywysog Cymru yn Nghastell Caernarfon
- David Lloyd George Election Pamphlet
- David Pritchard Papers
- David Williams, Solicitor Papers
- Davies Brothers, Slate Merchants, Porthmadog Records
- Day Book
- Deed
- Deeds and an Diary Extract
- Deeds and Documents
- Deeds for 16 Albert Street, Bangor
- Deeds of Braich y Drygwr isaf, Llandwrog.
- Deeds relating to 17 Beach Road, Y Felinheli.
- Deeds relating to 19 College Road, Bangor
- Deeds relating to a Property at Menai Street, Y Felinheli
- Deeds Relating to Carnguwch Church
- Deeds relating to Nantselar and Berthlwyd, Botwnnog
- Deeds Relating to the Parishes of Llandwrog and Llanwnda
- Deeds relating to Tre Ddafydd, Penygroes
- Deeds relating to Ysgwyfrith, Penmachno
- Deiniolen Co-operative Society Records (Additional)
- Deiseb
- Deunydd parthed Dafydd Hughes, Cefn Uchaf, Llanddeiniolen
- Diaries of Ian Elliott
- Diary
- Diary of a Young Seaman
- Diary of William T. Evans, Llanrhychwyn
- Dinorwic Quarry Records
- Dinorwig Photographs
- Dinorwig Power Station
- Dinorwig Quarry Paylsips
- District Plan
- Diwrnod Agored Ysbyty Gwynedd, Bangor
- Documents of Minffordd Hospital, Bangor
- Documents re Slate Industry
- Documents re. Bangor and Canon Thompson
- Documents regarding Menai Regatta
- Documents regarding William and John Jones, Porthmadog
- Documents relating Restoration of Ffestiniog Railway Engine Sheds
- Documents Relating to 47 Caellepa, Bangor
- Documents relating to a model of the ship M.A. James
- Documents Relating to Bangor
- Documents relating to Civil Defence
- Documents relating to Criccieth
- Documents Relating to Dorothea Quarry
- Documents relating to Electricity in Caernarfonshire
- Documents Relating to Felinheli Regatta
- Documents relating to Mining and Quarrying
- Documents relating to Peblig Mill and Bernard Wardle (Everflex) Ltd
- Documents relating to Penmachno Village Institute
- Documents relating to the 1969 Investiture of the Prince of Wales
- Documents relating to the Caernarfon and Ffestiniog Railway
- Documents relating to the Maypole Dairy, Caernarfon
- Documents relating to the Normal College, Bangor
- Documents relating to the Vaynol Estate
- Documents relating to Upper Bangor Wednesday Club
- Dogfennau Addysgol yn Ymwneud â Sir Gaernarfon
- Dogfennau Amrywiol yn Ymwneud âg Ysgol Ramadeg Pwllheli
- Dogfennau amrywiol yn ymwneud â Ysgol Ramadeg Pwllheli
- Dogfennau Parthed Williams Henry Preece (1834-1913)
- Dogfennau yn ymwneud a Ty'n Llan, Llandwrog a Pengwern, Saron, Llanwnda Documents relating to Ty'n Llan, Llandwrog a Pengwern, Saron, Llanwnda
- Dogfennau yn ymwneud â Pafiliwn Caernarfon
- Dorothea Quarry Photographs
- Dorothea Quarry Records
- Dorothea Quarry, Nantlle Collection
- Dosbarth o Blant Ysgol Groeslon
- Douglas Martin Collection
- Douglas Martin Photograph Collection
- Drawing of Caernarfon Inner Relief Road, Bangor to Fishguard Trunk Road A487
- Drawing of David Lloyd George
- Drawing of the Interior of St Aelhaearn Church, Llanaelhaearn
- Drawings by Robert Hughes, Uwchlaw'r Ffynnon, Llanaelhaearn
- Drawings included in an exhibition held at Tremadog Town Hall
- DVD 'Muriau Segontium'
- Dwylan, Llanengan, Papers
- Dyddiadur [?Evan Jones Ty Mawn]
- Dyddiadur Owen Edwards (1788-1831) Diary of Owen Edwards (1788-1831)
- Dyddiadur Richard Griffith, Ty'n Llwyn, Rhosgadfan/Diary of Richard Griffith, Ty'n Llwyn, Rhosgadfan
- Dyffryn Ogwen Flower Club
- E Jones & Son, Castle Square
- E. Bennett Williams Papers
- E. Bennett Williams Photographs
- Editions of 'Sometimes'
- Eglwys Sant Mihangel a Sant Gabriel Plwyf Llanrug
- Eifl Quarry Records
- Eisteddfod yr Urdd, Eryri
- Election Address of R.T. Jones
- Emlyn Evans Photographs
- Emyr Bennett-Williams Archive
- Emyr Thomas Papers
- Ernest Roberts Papers and Photographs
- Erw Fair Family, Bangor
- Erw Fair Family, Bangor: Photographs
- Essay
- Essay 'The History of Pentrefelin and Neighbourhood'
- Essay by Mathetes
- Evan Owen Family Correspondence
- Examination Papers for the Central Welsh Board
- Exercise Book
- Expedition Newsletter and Letter
- Extract from The Daily Sketch
- Family history of Vivian Hughes
- Family history of Vivian Hughes: Photographs
- Family history of Vivian Hughes: Recording
- Felinheli Sailing Club Photographs
- Ffeil parthed Dr Robert Roberts (1821-1891)
- 'Ffestiniog and Welsh Highland Railways - A Sustainable Future'
- Ffestiniog Railway Collection
- Ffestiniog Railway Company Archive
- Ffotograff Cyfarfod Protest
- Ffotograff o Boster yn Hysbysebu Cyngerdd Operatig
- Ffotograff o Ddarlun o Twm o'r Nant
- Ffotograff o Staff
- File of Correspondence
- First World War Certificates
- Flood Damage Petition - Cob Crwn
- Football Items
- Frank Rhys Jones Photographic Collection
- Friar's School Collection
- Friars School Magazine
- Friars School Photographs
- G. O. Jones Photographic Collection
- Game Book
- Garlandstone Museum, Porthmadog, Collection
- Garreg Fawr Deeds
- Geography Exercise Book
- Gerlan School Collection: Photographs
- Glangwna Estate, Caeathro
- Glangwna, Caeathro Photographs
- Glanrhyd Papers
- Glanrhyd Papers (Additional)
- Glanrhydfadog Papers
- Glaslyn Foundry, Porthmadog, Records
- Glass Negatives of Holiday Scenes
- Glynllifon Agricultural College Collection
- Glynllifon College Prospectus
- Glynllifon Farm Institute Photographs
- Glynllifon Farm Institute Plans
- Gohebiaeth Ynglyn â Cwmni Drama Capel Beulah, Caernarfon
- Gorsaf Dan Abersoch
- Grant of a Piece of Land
- Guide Book
- Guide Book for Pwllheli
- Guy Hughes Papers
- Gwydir Estate, Conwy Valley
- Gwynedd Aerial Survey Collection
- Gwynedd County Council Deeds
- Gwynedd Health Authority Reports
- Gwynedd Scouts Archive
- Gwynedd Women's Hockey Association
- Gwynfryn Deeds
- Gynhadledd Oll-Geltaidd, Caernarfon
- H. Hainge Papers
- H.M. Customs and Excise Records
- Hafod Owen Family Papers
- Hafod Owen Family Photographs
- Hancock Brothers Collection
- Hanes yr Achos yn Capel Cesarea M.C. a Llyfr Cofnodion
- Hanes yr Achos yn Rhydlios, Llyn
- Harry Jones, Cariboo, Papers
- Hendre Papers
- HMS Glendower Handbook
- Humphrey Owen and Sons, Ironmongers, Caernarfon
- Hunangofiant Robert D Williams, Bwlch y Gwynt, Deiniolen
- Hydro-electricity in Snowdonia
- Ifan Pugh, Journalist, Pwllheli, Collection
- Indenture
- Index
- Inspection Book
- Investiture Items
- Investiture of Prince of Wales
- Investiture Slides
- Investment Certificate
- Irish Mail Train Crash At Penmaenmawr
- Is-etholiad Cyngor Tref Caernarfon
- Items relating to Ann Williams of Rhyddallt Bach, Llanbeblig
- Ivor E. Davies, Penmaenmawr, Papers
- J. Isgoed Williams, Architect and Surveyor, Penmaenmawr Papers
- J. T. Roberts Deeds
- J. V. Williams (County Valuer) Papers
- J. W. Hughes and Company, Solicitors, Papers
- John Griffiths Papers
- John Lewis Williams Papers
- John Sam Evans yn Agor Gorsaf Rheilffordd Ffestiniog yng Nghaernarfon
- John Surtees Papers
- John Surtees Photographic Collection
- John Williams, Solicitor, Caernarfon Archive
- Jones Brothers Collection
- Jones Brothers Postcard Collection
- Kitchen Garden Diaries
- Leaflet
- Leaflet
- Lease
- Ledger Listing Flowering Plants
- Ledgers and Day Book of David Rice Hughes
- Letter Card
- Letter from Allanson and Co, Vaynol Estate
- Letter from Capain W Griffith Llywelyn
- Letter from David Thomas, Education Offices, Caernarfon
- Letter from Edward Evans, Governor of Ruthin Gaol to John Dixon, Governor of Caernarfon Gaol
- Letter from the Bishop of Bangor
- Letter to a Clergyman
- Lettercard of Pwllheli
- Letters from California, USA
- Letters from Two German Prisoners of War
- Letters from William Embrey
- Licence
- Liverpool Weekly Post
- Llais Tai Gwynedd
- Llanbeblig Parish Collection
- Llanbeblig Parish Photographic Collection
- Llanberis Photographs
- Llandudno Permanent Benefit Building Society Records
- Llanllechid Charity Church and School Papers
- Llanrug Home Guard
- Llawlyfr Dathlu
- Lleyn Rural District Council Records
- Llfryn Canmlwyddiant
- Llfryn Capel Ebeneser Porthmadog
- Lloyd George Museum Archives
- Lloyd George Museum Photographs
- Lloyd Griffith Collection: Papers
- Lloyd Griffith Collection: Photographs
- Lloyd Griffith Papers
- Llun Amrywiol
- Llun Amrywiol
- Llun Amrywiol
- Llun o Beckenham, Long Olew
- Llun o Ddisgyblion Ysgol Cae Top, Bangor
- Llun o Seindorf Arian Llanrug
- Llun o Stryd Fawr Pwllheli
- Llun o Ysgol Friars, Bangor
- Llun o'r Afon Menai
- Llun o'r Arvon, Stemar Ynys Mon
- [Llun o'r Cynhebrwg Cyntaf ym Mynwent Newydd Llanbeblig]
- Lluniau Amrywiol
- Lluniau Amrywiol
- Lluniau Amrywiol
- Lluniau Amrywiol
- Lluniau Amrywiol
- Lluniau Amrywiol
- Lluniau Amrywiol/Miscellaneous Photographs
- Lluniau Amwyriol
- Lluniau Amwyriol
- Lluniau Bont Menai
- Lluniau Cynnar o Fethel
- Lluniau Llwybr Gorymdaith yr Arwisgiad
- Lluniau o Ardal Llanberis
- Lluniau o Ardal Pwllheli
- Lluniau o Blant Ysgol
- Lluniau o Blant Ysgol Rhyd-ddu
- Lluniau o Bobl Mewn Gwisg Ffansi
- Lluniau o Clwb Rotari Pwllheli
- Lluniau o dai Pool Side, Caernarfon
- Lluniau o David Lloyd George
- Lluniau o Ddosbarthiadau Ysgol Llanbedrog.
- Lluniau o Ddringwyr tu Allan i Westy'r Bryn Tyrch, Capel Curig
- Lluniau o deulu McNeil Parry ac Will Roberts
- Lluniau o Dimau a Digwyddiadau yn Ysgol Friars, Bangor
- Lluniau o Enlli ar Ffurf Sioe Sleidiau
- Lluniau o Gaernarfon
- Lluniau o Gwmni Drama Pontrhythallt
- Lluniau o Twnel Fawr Dolwyddelan
- Lluniau o Ysgol Ramadeg Pwllheli
- Lluniau Rathbone Jones
- Lluniau sy'n Gysylltiedig â Chasgliad Côr Meibion Caernarfon.
- Lluniau Ysgol
- Llwynbrain, Llanrug
- Llyfr a gyflwynwyd i'r Parch a Mrs R.J. Jones
- Llyfr Cofnodi Damweiniau
- Llyfr Cyfrifon
- Llyfr Cyfrifon
- Llyfr Cyfrifon am Waith Amrywiol a Wnaed yn Ardal
- Llyfr Nodiadau o Gerddi a Chaneuon John Henry Roberts, Pen y Graig, Nefyn
- Llyfr Nodiadau o Thomas Beuno Jones, Bontnewydd
- Llyfr Sgrap
- Llyfr Testunau Pregethau
- Llyfr yn Cynnwys Barddoniaeth ac Emynau Amrywiol a Gyfansoddwyd gan H.T. Jones, Bangor
- Llyfrau
- Llyfrau Cyfrifion
- Llyfrn 'Holi i'r Amgylchiadau - Hanes yr Achos yn Henaduriaeth Arfon'
- Llyfryddiaeth o Ffynonellau Hanesyddol Arfon o Perl y Plant 1900-1934
- Llyfryn
- Llyfryn
- Llyfryn
- Llyfryn
- Llyfryn 'Hanes Ardal Bethel'
- Llyfryn Canmlwyddiant/Centenary Book
- Llyfryn Printiedig
- Llyfryn Strategaeth Iaith: 1991-2001
- Llyfryn yn Cynnwys Hanes Boduan
- Llynges yng [?Nghaernarfon]
- Llythyr a Cherdd Goffa William Owen a David Williams
- Llythyr a hunangofiant Tommy Williams
- Llythyr Oddiwrth George M. Ll. Davies [yn ysgrifennu o] Hotel Gwalia, Upper Woburn Place, London
- Llythyr Oddiwrth Lewis Owen, Bryngo, Bryngwran
- Llythyrau Michael R. Hughes
- Llythyrau Rhyfel Second World War Letters
- Llythyrau Twm Williams a William Closs/Letters of Twm Williams and William Closs
- Lord Lieutenancy Papers
- Luniau Amrywiol
- Lyfryn Hanes Bodsilyn ger Aber
- Map Daearegol
- Map of Caernarfon
- Map of Caernarfonshire
- Map of Traeth Mawr, Porthmadog
- Marconi Film
- Marconi Station Photographs
- Marconi Wireless Station, Ceunant, Llanrug
- Maritime Papers of William Griffiths
- Maritime Photographs of William Griffiths
- Marriage Licence for Rowland Jones, Widower and Ellinor Jones, Spinster
- Martha Parry, Bontnewydd, Papers
- Marwnad
- Masonic Lodge Booklets
- Maternity Services
- Maude & Tunnicliffe Archives
- Meinwen Parry Collection
- Menai Strait Regatta
- Merched y Wawr Mynytho
- Merched Y Wawr, Penrhosgarnedd
- Milwyr [?o Gaernarfon]
- Ministry of Defence Records
- Miscellaneous Account Books
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Collection
- Miscellaneous Concert Programmes
- Miscellaneous Documents
- Miscellaneous Documents
- Miscellaneous Documents Mostly re. Second World War
- Miscellaneous Files
- Miscellaneous Guide Books
- Miscellaneous Invoices from Vaynol Estate
- Miscellaneous Pamphlets and Leaflets
- Miscellaneous Papers being mainly Wynne, Spicer, and Robinson Papers and Papers of the Tre'r dafarn Estate found among the Quarter Sessions Records
- Miscellaneous papers in Caernarfon Probate Office.
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Photographs
- Miscellaneous Postcards
- Miscellaneous Postcards
- Miscellaneous Postcards of Caernarfonshire
- Miscellaneous Receipts
- Miscellaneous Receipts
- Miscellaneous Receipts and Programmes
- Miscellaneous Sale Catalogues
- Miscellaneous Sales Catalogues
- Miscellaneous School and Student Photographs
- Miscellaneous Slides
- Miscellaneous Views of Eryri (Snowdonia)
- Morfa Bychan W.I. Scrap Book
- Morgan and Rake families of Wenvoe and Cardiff papers
- Moriah Chapel Fire
- Moriah Chapel Records
- Mortgage
- Mortgage
- Mortgages
- Motor Taxation Records
- Mr Bryn Parry Collection: Documents
- Mr Tommy Morris Collection
- Music Book
- Mynwent Brynaeraru
- Nahoran Estate
- NALGO Union - North Wales District
- Nantlle Valley Photographs
- National Identity Card
- Negyddion o Ddelweddau o Ddogfennau Prosiect Casglu'r Tlysau
- Newborough (Glynllifon) Estate Plans
- Newborough Archives
- Newspaper
- Newspaper Cutting
- Newspaper Cutting
- Newspaper Cutting From The Daily Post
- Newspaper Cutting re painting of Thomas Lewis Williams
- Newspaper Cuttings about Lloyd George
- Newspaper Pullout
- Newyddion Peg
- North Wales Arts Association Archive
- North Wales Bedding Company Collection
- North Wales Disablement Income Group Collection
- North Wales Football Association Records
- North Wales Local Education Authority Youth Service Officers
- North Wales Narrow Gauge Railway Company
- North Wales Quarrying Museum Collection
- Note
- Notebook
- Notebook of Anne Jane Lloyd, Penmorfa
- Notes for 'The Priory and Parish Church of St Mary, Beddgelert'
- Notice of Royal Trains
- Nursing Papers of Nurse Glenys Williams
- O. H. Jones Papers
- Ogwen Rural District Council Records
- Old Photographs of Bethesda
- Order of Service
- Order of Service
- Ordnance Survey maps, Nefyn, Bangor, Pwllheli
- Oriel yr Annibynnwyr Cymreig
- Our Magazine
- Owain Roberts Collection
- Owain Roberts Collection
- Owen Evans, Arweinydd Band Llanberis
- Owen Owens Collection
- Pamffledi Ymgeiswyr Plaid Cymru
- Pamphlet
- Pamphlet
- Pamphlet from Caernarfon Chamber of Commerce
- Pamphlets and Leaflets
- Pan-Celtic Conference Albums
- Paper on the preparation for the investiture of HRH Prince of Wales at Caernarfon
- Papers (Additional) of the Watkin family of Muriau [Mawr] Criccieth
- Papers and Books relating to Bangor Diocese
- Papers of Birch, Cullimore, and Douglas, of Friars, Chester, Solicitors
- Papers of Capt. Griffiths, Moranedd, Aberdaron
- Papers of Captain John Hughes, Brigydon, East Twthill, Caernarfon
- Papers of Captain William Jones of the Albion Inn, Chapel Street, Caernarfon, later of the Castle Hotel, High Street, Pwllheli
- Papers of Charles Wyatt Warren, Caernarfon
- Papers of Dorothy Woolley, Bangor
- Papers of Ebenezer Morris Roberts, of Penlan Street, Pwllheli, Solicitor
- Papers of Elwyn Jones and Co., Solicitors, Bangor
- Papers of Emrys Hughes, Borth-y-Gest
- Papers of Evan Jones and Son, Timber Merchants
- Papers of Gordon H. Richards and the Alexandra Quarry
- Papers of Griffith Jones, Solicitor, Caernarfon
- Papers of J. E. Greaves, Lord-Lieutenant of Caernarfonshire
- Papers of Llewelyn Lloyd Jones, Architect and Surveyor, Lloyds Bank Chambers, Caernarfon
- Papers of Llewelyn T. Griffith
- Papers of Prof. W. Lewis Jones
- Papers of Sprott, Stokes and Turnbull, Solicitors, Shrewsbury
- Papers of the Bulkeley Johnson (Ysbyty) Estate
- Papers of the Chief Air Raid Warden, Porthmadog
- Papers of the Davies Bryan family (Caernarfon and Cairo)
- Papers of the Drage Family, Criccieth
- Papers of the Holyhead and North Wales Gas and Water Company
- Papers of the Madoc Memorial Hospital and Porthmadog Nursing Association
- Papers of the Minerva Printing Works, Penygroes
- Papers of the Rev. Parry Hughes
- Papers of the Thomas Family, People's Café, Caernarfon
- Papers of the Watkin family of Muriau [Mawr] Criccieth
- Papers of Thomas Bugbird & Son Ltd
- Papers of W.R. Jones, Bangor
- Papers of William Jones and Son, Pwllheli
- Papers relating to Administration and Estate lands of Friars' School, Bangor
- Papers relating to Bishop John Owen, Archibishop of Wales
- Papers relating to Dorothea Quarry Footpaths
- Papur Bro - Yr Wylan
- Papurau (Ychwanegol) Ioan Glynne
- Papurau Capel Coch
- Papurau Caradog Jones, Mynytho
- Papurau Cwmni Theatr Cymru (Welsh Theatre Company) Papers
- Papurau Ellis Jones
- Papurau G. O. Jones
- Papurau G. R. Jones
- Papurau Gelli'r Ynn
- Papurau Geraint Jones, Trefor
- Papurau Gwilym Esmor Humphreys
- Papurau Mansel Williams
- Papurau Merched y Wawr, Arfon
- Papurau Newydd Amrywiol
- Papurau Robert Williams, Mynytho/Papers of Robert Williams, Mynytho
- Papurau Teulu Thomas, Tyddynyberth, Bethel
- Papurau Undeb Myfyrwyr Colegau Bangor
- Papurau W. J. Jarvis (Ychwanegol)
- Papurau W. J. Parry
- Papurau William Vaughan Jones, Waunfawr
- Papurau'r Parch. Stephen O. Tudor
- Papurau'r Parch. W. J. Owen o Fangor a Benllech
- Parch William Jones, Enlli
- Parch. Stanley Williams and Dr. Gwilym Arthur Jones Papers
- Parliamentary Bills and Reports
- Pen yr Orsedd Quarry
- Penmaenmawr and Trefor Quarry Records (Additional)
- Penmaenmawr Quarry Photographs
- Penrhyn Quarry Documents
- Penrhyn Quarry Records
- Penybryn (Edern) Papers
- Penygraig Papers
- Penygroes Photographs
- Penyrorsedd Engineering Plans
- Penyrorsedd Quarry Additional Records
- Periodical
- Photograph
- Photograph
- Photograph
- Photograph
- Photograph
- Photograph
- Photograph
- Photograph
- Photograph Album
- Photograph Album
- Photograph Album 'My Days in the Service'
- Photograph associated with Diaries of Ian Elliott
- Photograph Collection of Porthmadog Inner Wheel
- Photograph of an exhibition held at Tremadog Town Hall
- Photograph of artist Keith Bowen and Thomas Lewis Williams, Garndolbenmaen
- Photograph of Boys Council School, Penrallt
- Photograph of Brynrefail School
- Photograph of Caernarfon Battalion Home Guard
- Photograph of Caernarfon Castle
- Photograph of Caernarfon Pavilion
- Photograph of Caernarfon WI Members
- Photograph of Connection of Penygroes
- Photograph of Daniel Williams
- Photograph of David Lloyd George
- Photograph of David Lloyd George
- Photograph of Elizabeth Hughes
- Photograph of Female Students
- Photograph of George VI and Queen Elizabeth
- Photograph of Graduates
- Photograph of Interior of Horeb Chapel
- Photograph of Konrad Beck
- Photograph of Lillian Griffith
- Photograph of Margaret Nora Thomas
- Photograph of Mrs G.T. Jones
- Photograph of Mrs Menzies, Bryn Eden, Caeathro
- Photograph of Nurses at Y Wern Hospital
- Photograph of Police Officers
- Photograph of Queen Elizabeth at Caernarfon Castle
- Photograph of Sir William Vincent (1866-1941)
- Photograph of the New York St David's Society 120th Anniversary Dinner
- Photograph of the Prince and Princess of Wales
- Photograph of the Staff of the Library Service
- Photograph of Train
- Photograph of Tremadog Board School
- Photograph of William Embrey
- Photograph of Woman in Traditional Welsh Costume
- Photograph of Workers
- Photographic Collection of Mrs Ellen Williams
- Photographic Collection of St Gabriel's Church, Cwm-y-Glo
- Photographic Items Associated with XM12038
- Photographs
- Photographs and Drawings by Wyn Williams
- Photographs from the Collection of Alderman O. Gwyrfai Owen and Mrs. Katie Owen
- Photographs from the Mansel Williams Papers
- Photographs of Aberglaslyn
- Photographs of Army Camp at Porthmadog
- Photographs of Bala Bangor Students
- Photographs of Bangor
- Photographs of Bangor Normal College
- Photographs of Bangor Rugby team
- Photographs of Buildings in Pwllheli
- Photographs of Bull Inn and School Pupils in Bangor
- Photographs of Caernarfon
- Photographs of Caernarfon
- Photographs of Caernarfon Castle
- Photographs of Caernarfon Council School
- Photographs of Caernarfon Grammar School
- Photographs of Caernarfon Pavilion
- Photographs of Caernarfon Post Office Engineers
- Photographs of Caernarfon Record Office
- Photographs of Cricieth, Aberdaron and Beddgelert
- Photographs of Dinorwig Power Station.
- Photographs of Dorothy Lock (nee Woolley) Family
- Photographs of Felin Faesog, Clynnog
- Photographs of Glanadda School
- Photographs of Leslie Morgan
- Photographs of Llanberis
- Photographs of Local Chinese Women
- Photographs of Medals and Certificate
- Photographs of Minffordd Hospital, Bangor
- Photographs of Nantlle
- Photographs of North Wales Views
- Photographs of Nurses and Patients at the Caernarfonshire and Anglesey hospital
- Photographs of Pen yr Orsedd Quarry
- Photographs of Penygroes Council School
- Photographs of Penygroes Grammar School and Ysgol Dyffryn Nantlle
- Photographs of Robert Jones, Talysarn
- Photographs of Robert Williams, Mynytho
- Photographs of Seiont II
- Photographs of Ships' Crews
- Photographs of Shops
- Photographs of the Family of Llys Gwynt, Llanfairfechan
- Photographs of The Jones Family of Ty'n Llan, Llandwrog
- Photographs of the Llangwnadl Area
- Photographs of the Majestic Cinema, Caernarfon
- Photographs of the Roberts Family
- Photographs of the Snowdon Race Parade
- Photographs of Theatr Gwynedd
- Photographs of Tre'r Ceiri
- Photographs of Two Caernarfon Streets
- Photographs of Two Schools
- Photographs of Two Schools
- Photographs of Wallis Shop, Bangor
- Photographs of War Memorials
- Photographs Printed in the Dragon Times
- Photographs re. Canon Thompson
- Photographs relating Restoration of Boston Lodge
- Photographs Relating to Bangor
- Photographs relating to Bishop John Owen, Archibishop of Wales
- Photographs relating to Bontnewydd
- Photographs relating to Caernarfon
- Photographs relating to Caernarfon and Dinorwig
- Photographs relating to Electricity in Caernarfonshire
- Photographs relating to Henry Prince
- Photographs relating to Hydro Electric Power in North Wales
- Photographs relating to John Lewis Jones of Nefyn
- Photographs relating to Llanrug
- Photographs relating to Llanrwst and Betws y Coed
- Photographs relating to Robert Griffith
- Photographs relating to the Dragon Radio Club
- Photographs relating to the HMS Glendower
- Photographs relating to the Nantlle Valley
- Photographs relating to Upper Bangor Wednesday Club
- Photographs relating to William John Griffiths' Military Service
- Photographs relating to WWI and WWII
- Photographs Taken by Artist William Selwyn
- Photographs taken by William Kenyon Jones
- Plaid Cymru, Cangen Pwllheli
- Plan
- Plan General Arrangement
- Plan of part of the Brynkir Estate
- Plan of the Glan Gwna Estate
- Plans for Parc Glynllifon Mill
- Plans for St. Cyngars Church, Borth-y-Gest
- Plans from Tremadog Estate Auction
- Plans of Dinorwig Power Station
- Plas Bodaden
- Plas Brereton Papers
- Pobl a'u Gwaith ym Methel
- Poisons Register Book
- Police Investiture Photographs
- Poole Papers
- Pooley Hall, Warwickshire, Estate Papers
- Porthdinllaen Harbour Company Records
- Porthmadog Circuit Papers
- Porthmadog Cricket Club
- Porthmadog Girls Club Records
- Porthmadog Harbour Records
- Porthmadog Rotary Club Collection
- Porthmadog Rotary Club Collection: Photographs
- Porthmadog Urban District Council Records
- Porthmadog W.I. Collection
- Porthmadog W.I. Collection, Additional Deposit
- Postcard
- Postcard
- Postcard
- Postcard
- Postcard
- Postcard
- Postcard
- Postcard
- Postcard
- Postcard Collection
- Postcard Collection
- Postcard of St. Seiriol
- Postcard to William Williams Bach, Penmachno
- Postcards
- Postcards
- Postcards
- Postcards
- Postcards of Abererch
- Postcards of Betws y Coed
- Postcards of Caernarfon
- Postcards of Caernarfon Castle
- Postcards of Caernarfonshire
- Postcards of Local Views
- Postcards of Local Views
- Postcards of North Wales
- Postcards of Police on Duty
- Poster
- Poster
- Poster for a "Son et Lumiere"
- Posteri
- Print of Caernarfon Castle
- Print View of Old Ferry Farm, Llandudno by G ?[Nages]
- Printed Correspondence between Lord Penrhyn and the Board of Trade
- Programme
- Programme
- Programme
- Programme
- Programme
- Programme
- Programme
- Programme
- Programme 'Robinson Crusoe'
- Programme and Rule Book
- Programmes
- Programmes
- Programmes for Gardening Shows
- Programmes relating to Various Events in Caernarfon
- Property Deeds
- Publicity for a Production of H.M.S. Pinafore
- Pwllheli and District Trades Council Papers
- Pwllheli Borough Council Records
- Pwllheli May Queens
- Pwllheli Toc H Archive
- Pwllheli Union Records
- Pwyllgor Ariannol y Gymanfa Gyffredinol y Methodistiaid Calfinaidd
- Pwyllgor Gwyl y Pump Rhanbarth (Merched y Wawr)
- Pysgotwyr yn Dangos eu Pysgod yng Nghaernarfon
- Quarrying Technique Films
- R. D. Evans Papers
- R. W. Williams, Penygroes Papers
- Railway Photographs
- Rate Book for Clynnog Parish
- Receipt
- Receipts
- Receipts
- Receipts
- Receipts relating to Felin Faesog Mill
- Recipe Book
- Record: The Hwyl of Four Thousand Welsh Voices
- Recording of Lowri Richards
- Records Album
- Records and Papers of the Borough of Caernarfon
- Records from the Calvinistic Methodist Bookroom, Caernarvon
- Records from the Liberal Club building, Caernarfon
- Records of Criccieth Urban District Council
- Records of Davies Bros. Slate Merchants, Porthmadog
- Records of Evan Jones & Son, Caernarfon
- Records of Madryn Castle Farm School and Glynllifon Agricultural Institute
- Records of Penrhosgarnedd W.I.
- Records of Porthmadog Inner Wheel
- Records of Richard Williams & Co. and Richard Bowton & Co., Porthmadog
- Records of the Bangor Normal College
- Records of the Caernarvonshire Constabulary
- Records of the Gwynfryn and Cefndauddwr estates
- Records of the Llandegai Clothing Club
- Records of the National Farmers' Union in Caernarfonshire
- Records of the North Wales Coast Football Association
- Records of the North Wales Quarrymen's Union
- Records of the Royal Welsh Yacht Club, Caernarfon
- Records of Thomas Davies (Cattle Dealer) & Family
- Records relating to the Porthmadog Evacuee School
- Register
- Registration Certificate
- Report of the Caernarfonshire Combined Sanitary Districts
- Report on the Education of the Subnormal Child
- Reverand J.R. Richards
- Rhaglen
- Rhaglen
- Rhaglen
- Rhaglen
- Rhaglen
- Rhaglen
- Rhaglen
- Rhaglen
- Rhaglen a Sgript Cynyhyrchiad Bywyd a Gwaith T. Rowland Hughes
- Rhaglen Cymanfa Ganu yng Nghapel Ebenezer, Clynnog
- Rhaglen Cyngerdd Blynyddol Bandiau Gwynedd Môn
- Rhaglen Gwasanaeth
- Rhaglen Gwyl Ddrama y Groeslon
- Rhaglen Sefydlu
- Rhaglenni
- Rhaglenni
- Rhaglenni
- Rhestr Lleoliadau Beddi
- Rhestrau Testunau Eisteddfodau a Cymanfaoedd
- Rhiw School
- Rhwydwaith Beicio Peris
- Rhyllech (Llannor) Papers
- Roberts Cycle and Motor Agents Collection
- Robyns Owen Collection
- Roll of Honour
- Royal Investiture Collection
- Royal Opening of the Dinorwig Power Station
- Royal Welsh Agricultural Society Show
- Royal Welsh Fusiliers
- S. Richards, Consulting Quarry Engineer, Papers
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue
- Sale Catalogue for an Auction at the Sportsman Inn, Caernarfon
- Sale Catalogue for Madryn Home Farm
- Sale Catalogue for Properties Owned by Lord Harlech
- Sale Catalogue of Agricultural Properties on the Llyn peninsula
- Sale Catalogue of the Lleyn Estate
- Sale Catalogue Plan
- Sale Catalogues
- Sale Catalogues for Gwydir Properties
- Sales Catalogue
- Sales Catalogue Associated with Davies Bros. Collection
- Sales Catalogue Associated with Davies Bros. Collection
- Sales Catalogue for Lord Harlech's Land
- Sales Catalogues
- Sales Catelogue for Harlech Estate
- Samuel Victor Beer Collection
- Sara Roberts, Pwllheli, Papers
- Schedule of Property on Nanhoron Estate
- Scheduled Monument Consent Grant Report
- School Cookery Book
- Scrap Book
- Scrapbook
- Sea Charts
- Sea Charts
- Seaman's Discharge Book
- Senana (Arfon) Cymru a Pwyllgor Cymynfa Mudiad y Chwiorydd Arfon
- Sgwrs ar Hanes Pentre-uchaf
- Sion Wyn o Eifion Letters and Papers
- Siop Eifion House, Gemydd
- Sketch Book Kept by Miss C Jones
- Slate Mark Book
- Slate Quarrying Photographs
- Sleidiau Amrywiol
- Slides
- Slides of Buildings in Bangor and Porthmadog
- Slides of Caernarfonshire Scenes
- Slides of Caernarfonshire Views
- Slides of Dinorwig Power Station, Llanberis
- Slides of Dorothea Slate Quarry
- Slides of Ferodo Factory
- Slides of Kings School Boys' Camp
- Slides of Local Views
- Slides of Seiont II
- Slides of the Caernarfon Bypass
- Snowdon Mountain Race Photographs
- Snowdonia National Park Society
- Soldier's Service and Pay Book
- Solomon Andrews Papers
- South Caernarfonshire Ladies Lifeboat Guild
- 1st Caernarfon Volunteer Regiment
- St. Winfred's School, Bangor
- Stock Movement Records
- Surveyor's Report
- T. Meirion Hughes Collection
- T.A. Morris Porthmadog Collection
- Taflen Angladd
- Taflen Angladd
- Taflen Angladd
- Taflen Canmlwyddiant
- Taflen Etholiad
- Taflenni Etholiad y Cynulliad
- Tair siarabang o Flaen Adeilad Ymddiriedolaeth yr Harbwr, Cei Llechi, Caernarfon.
- Talarvor Papers
- Talysarn Sale Catalogue
- Tan-y-Dinas and Pantafon Deeds
- Tangent Club Photograph Albums
- Tap Sain o Mr Peredur Wyn Williams
- Tape Recording of Bengy Carey Evans
- Tapes found within the Collection of Miss Eveline Vaughan Davies
- Tapes of Local Chinese Women
- Tapiau o Ivor Davies
- Teaching Certificate
- Territorial Auxiliary Forces Associations of Caernarfonshire and Anglesey Records
- Testimonial for Robert Jones
- Ticket
- Tirwedd Trust Papers
- Tocynnau
- Tocynnau
- Tommy Williams Photographic Collection
- Toriadau Allan o Gylchgrawn 'Trysorfa y Plant'
- Traethawd 'Hen Longau a Llongwriaeth Sir Gaernarfon'
- Traethawd Hen Longau a Llongwriaeth Sir Gaernarfon/Caernarfonshire Ship and Shipping Essay
- Traffic Operation Orders
- Transport and General Workers Union Papers
- Trevor Roberts, Solicitors: Anglesey Manorial Courts Records
- Trevor Roberts, Solicitors: Caernarfon Harbour Trust Records
- Trevor Roberts, Solicitors: Plastirion Estate Papers
- Trevor Roberts, Solicitors: Shrievalty Records
- Trevor Roberts, Solicitors: The Estate of John Jones
- Trinity House Collection of Plans of Bardsey Lighthouse
- Tyddyn Hywel, Clynnog Fawr
- Tynewydd, Llannor
- Tynycoed, Bodaden and Aberkin Papers
- Tystysgrifau Amrywiol/Miscelleneous Certificates
- Tywysog Edward yn Cyrraedd Castell Caernarfon ar Gyfer y Seremoni Arwisgo
- Union of Parish Officers Book
- Valuation
- Various items pertaining to Caernarfon
- Various Photographs of Caernarfon Area
- Various Photographs relating to Caernarfon
- Various Photographs relating to Bangor
- Various Postcards
- Various Prints of North Wales
- Vaynol Papers
- Video of Fire Brigade Demonstrations
- Videos relating to the Dragon Radio Club
- Visitor Information
- Visitors Book
- Visitors' Book
- W. A. Madocks Letters
- W. Gilbert Williams Papers
- W. Morgan Richards Papers
- W. O. Roberts Collection
- W. Penry Williams Photographic Collection
- Warrants for Poor Relief
- Watkin Papers
- Waunfawr W.I. Collection
- Welsh Agricultural Organisation Society Ltd Caernarfonshire Records
- Welsh Highland Railway Poster
- Welsh Water Authority Records
- Welsh-American Magazine
- Wern Estate - Papers of R. M. Greaves
- Wern Papers
- Will and Probate Documents
- William a Mary Evans a'u Teulu, London Road/High Street, Porthmadog
- William Alexander Papers
- William Davies, Butcher, Porthmadog
- William Hughes, Rhostryfan, tad y Parch R.W. Hughes, Pontrobert a Llanberis (1859-1922)
- William Jones, Llanberis, Family Papers
- William Lloyd Jones Papers
- William Vaughan Jones (1905-1978) Photographic Collection
- Williams Family Papers, Tryfan
- Williams-Ellis family of Glasfryn
- Wills and Probate Documents
- Wine and Liquor Merchant's Account Book
- Work Pass for the HMS Glendower, Butlins
- 'Y Gragen'
- Yale and Hardcastle Papers
- Ynys Enlli (Bardsey Island) Photographs
- Yr Wyl Ddrama yn Neuadd y Dref, Pwllheli
- Ysbyty Gwynedd League of Friends
- Ysgol Brynrefail Records
- Ysgol Dyffryn Nantlle Photographs
- Ysgol Sul Capel Peniel, Nantmor
- Ysgol Syr Hugh Owen (Segonitum) School Photographs
- Ysgrif