The content of the Harrison Collection is organised into folders, and each folder is numbered from 1 to 45. The following arrangement consists of:
- Fol.1. Correspondence written by Thomas Wilson (1663-1755), Bishop of Sodor and Man (1697-1755) to Revd James Wilks (1717-1777), Governor of the Island (1746), the Earl of Derby (1718) and various individuals regarding personal, ecclesiastical and civil jurisdiction affairs. Correspondence to Bishop Wilson from Dr Trottier (Dublin) is also included (1743).
- Fol.2. Documents connected to Bishop Wilson such as an authority to Vicars-General to act as Ordinary during his absence (1735), a license for the northern parish of Lezayre (1713), excommunication matters (1736), notes on sermons, clergy instructions relating to marriages, the smuggling trade, drinking to Jacobite toasts and the taking of the oath of abjurations. Other documents relate to correspondence with the House of Keys (1722), prayers for condemned men, the elegy of Bishop Wilson's death and instructions for the making and lettering of his tombstone.
- Fol.3. Correspondence (incoming and outgoing) of Mark Hildesley (1698-1772), Bishop of Sodor and Man (1755-1772) to the clergy, Mr Stevenson of Balladoole (1763), Archbishop of Canterbury (1767), Revd James Wilks and the King (n.d.) - either George II (1683-1760) or George III (1738-1820). Other documents concern funds to build churches and print the Scriptures in Manx, business in London (1762), authority given to Vicars-General to act during his absence (1769) and arrangements for Hilsesley's funeral (1772).
- Fol.4. Correspondence of George Murray (1784-1860) Bishop of Sodor and Man (1813-1827) to Vicar General Thomas Cubbon (1739-1828) regarding ecclesiastical matters (1818-1827). Other documents include correspondence of Claudius Crigan (c.1739-1813), Bishop of Sodor and Man (1784-1813), Robert John Eden 3rd Baron of Auckland (1799-1870), Bishop of Sodor and Man (1847-1854) and Baptist Levinz (d.1693), Bishop of Sodor and Man (1684-1693).
- Fol.5. Correspondence to Vicar General Thomas Cubbon and documents such as certificate of Institution, bonds, receipts, an appeal to chancery court and mandate for induction and a Psalm. (1760s-1810s)
- Fol.6. Sundry correspondence to Bishop Hildesley, James Wilks, Revd David H. Harrison (some outgoing correspondence too) and others. (1750s-1800s)
- Fol.7. Miscellaneous documents such as orders and instructions for the making of a road, forms of service in English and Manx, bills, copies of press notices, a copy of an Act of Tynwald (1713), letters regarding an estate, an address from the House of Keys to the new Duke of Atholl (1764) and directions from King George to all Bishops (1721). Other material includes a report to the Bishop, a grant of property rights in the Island by King James (copy), a petition of local landlords to Bishop Hildesley, an address of the Manx clergy to King George III on his accession (1761), a public notification and certificate and a newspaper cutting regarding the need for the British Government to take over the Isle of Man. (1710s-1850s)
- Fol.8. Miscellaneous documents such as a copy of an Act of Tynwald (1734), Bishop Bridgeman's (d.1682) appointment of Vicars-General (c.1670s), an apothecary's account (1755), Samuel Rutter, Bishop of Sodor and Man's (1661-1663) authority to grant marriage licence (1661), a copy of a petition of landholders to the House of Keys (1776) and the Duke of Atholl's speech to the Key on his appointment as Governor (reply of Keys included, 1793). Other documents include a mortgage on lands in Maughold (1759), an assignment of Power of Attorney (1839), questions by Lord Derby as to the rights of the Bishop (1719), a will of William Killip (1795), a copy of a deed for St Mark's Chapel (1772), a draft letter of a dispute over the Fish Tithe, a copy of a Proclamation by the King (1721) and a copy of an Appeal by the Keys to the Early of Derby for the suspension of the Act in Restraint of Trade (1721). Further material present includes permission for change of Guardian for Mr R. A Stevenson (1759), a claim by Margaret Christian against her guardian (1770), newspaper cuttings (1890s), notes on the Kermode family and Claughbane (1932), notes from the Archdeacon's register (1628-1700), printed circular on Peel Castle (1858), observations on the 'Mischief Act', and a memorandum of rents on an estate in Castletown (1772). (1620s-1930s)
- Fol.9. Miscellaneous items such as a hymn (with Manx version attached), a poem in Manx (1820), a manuscript book of two sermons preached in 1772 and 1795 (with Manx translations attached) and a sermon (1803) preached at Hanover, Jamaica, by Revd Stephen Harrison (b.1780).
- Fol.10. Genealogical information on the Wilks, Cubbon, Collet, Cosnahan and Harrison branches of the family.
- Fol.11. Papers of Revd Stephen Nathaniel Harrison (1836-1925) such as, bills, receipts, note of investment and income, a letter from Lord Raglan (1857-1921), Lieutenant Governor of the Isle of Man (1902-1919) regarding the appointment as a Justice of the Peace (reply included, 1904), letters relating to the estate of Miss M.T. Harrison (1898), a 1935 letter from the Manx Museum regarding an article about Sir Mark Cubbon (1785-1861).
- Fol.12. Correspondence of the Harrison family including Theodosia Harrison née Rimmer (great-granddaughter of Revd James Wilks), Revd Bowyer Harrison (Theodosia's husband), Stephen Harrison and Mark Rimmer (great grandson of Revd James Wilks). (1820s-1860s)
- Fol.13. Correspondence and legal documents of Misses Ann (1783-1847), Elizabeth [Betsy] (1788-1869) and Maria Cubbon (1792-1862), sisters of Sir Mark Cubbon (1785-1861). (1820s-1860s).
- Fol.14. Minutes, extracts, draft and constitution of Convocation (1703-1776) and minutes of the Consistory Court (1756-1758).
- Fol.15. Minutes, rules, applications for assistance and receipt books for the Royal Bounty and the Fund for the Widows & Orphans of the Clergy (1750s-1780s).
- Fol.16. Material relating to fish tithe disputes such as, correspondence, court case items, statement of receipts and payments lists of herring boats paying customs fees, coroner's certificate, depositions of witnesses, account of fishermen's threats, memo of herring tithes due from Ballaugh fishermen, rules and orders observable for the Herring fishery, valuation of herring tithes of Kirk Michael, list of boat masters in Kirk Michael, names of crews for all boats in Kirk Michael, order for imprisonment, petition for non-payment and a list of executions for costs given to coroner. (1740s-1770s)
- Fol.17. Material relating to Impropriate tithes, such as correspondence from Bishop Wilson to the Duke of Atholl regarding his claim (1750), reports of proceedings of trials in Castletown and London (1755-1756), minutes of the trial at Castletown (1755), order to the clergy to make a return of the value of their livings (1763) and orders regarding payments from the tithes to schoolmasters (1675). Other material includes a draft letter instructing the clergy to claim the money due to them, a memorial of Revd John Crellin applying for a grand from the fund (1768), a copy of a deed by the Duke of Atholl appointing Trustees for the fund (1757) and a copy of the collateral security given by the Earl of Derby for the enjoyment of the tithes (1676).
- Fol.18. Material relating to Impropriate tithes, such as statement of receipts and expenditures, with valuations for various parishes, sundry papers for use in the trial in London, statements showing the position of the fund at various times and of sums of disbursed and statements showing the revenues of the Bishop. (1750s).
- Fol.19. Documents relating to various tithes around the Island (1699-1782).
- Fol.20. Papers relating to the Academic School (Castletown) Fund such as a statement of the origin of the fund, license for the schoolmaster, a copy of Bishop Barrow's deed establishing a scholarship at Dublin, original letter from Bishop Levinz regarding an Oxford master for the school (1690), letter from Bishop Hildesley to the Archdeacon regarding payments to be made to scholar and an original acknowledgement from the Duke of Ormonde of a loan from the fund (1674). Other material includes correspondence of Bishop Wilson, Revd James Wilks, regarding the fund, receipted account of Wilks' expenses while in Ireland and a will of Mrs E Sampson. Correspondence to Mr Ross regarding his conduct and money owed to the family, and correspondence relating to Revd T. Castley is also present. (1670s-1760s)
- Fol.21. Extracts from civil and ecclesiastical court records and correspondence regarding a lawsuit against Revd J. Wilks. (1610-1755)
- Fol.22. Documentation on the mills in the north of the Island at Cornaa, Lewaigue and Ballure, with items such as statements of corn ground (1755-1766), income and expenditure (1756-1759; 1771-1777), letter showing the division of purchase price of the mills (1750), account books, partnership accounts (1783 & 1820), costs of repairs and rebuilding and a copy of a bill of sale from J. Collet of Philadelphia, U.S.A to Revd T. Cubbon of his share in the mills. Other material present is an agreement to let land near Lewaigue mill for the building of a house (1782), petitions for the building of the house (1779), a petition for the water-rights of the Ballure Mill and sundry notes, memoranda and bills.
- Fol.23. Maps of the Isle of Man and Harrogate, York and estate plans of Port Lewaigue, Southern Ramsey, Dhoon Parsonage, Baldroma Mooar (Maughold) and Ballure; also mapping of suggested roads near Claughbane and several un-named sketches of plans. (c.1800s)
- Fol.24. Papers of Colonel Mark Wilks (1759-1831), including an acrostic addressed to him, correspondence to various family members such as Miss E. Cubbon and Revd T. Cubbon (discussing the character and life of Sir Mark Cubbon) and his will. (1790s-1830s)
- Fol.25. Private correspondence of Sir Mark Cubbon (1785-1861), including letters to his father, his sisters and Col. Mark Wilks. Incoming correspondence from Lord and Lady Tweedle, Major Dobbs, Captain J. Fulton, Lord and Lady Canning, Lord Dalhousie (1812-1860), Lord Elphinstone (regarding the retreat from Cabul) and Captain E.M. Martin are also present. (1800s-1860s).
- Fol.26. Incoming correspondence to Sir Mark Cubbon, including letters from Col. Agnew and Col. Mark Wilks; also letters from Col. Agnew to Col. Wilks and Col. Wilks to Col. Munro. (1804-1811).
- Fol.27. Papers of Sir Mark Cubbon including statement of services, household expenses, memorandum of wine stocks, various bills, invoice books, invoices for wine and tea, request for payment of an account from an Indian firm, statement of accounts on closing his accounts in India, pencil sketches, lists of his papers and books, letters of sympathy regarding his death and a receipt for a legacy paid to William Cubbon of Ballavere, Isle of Man. (1840s-1860s)
- Fol.28. Official correspondence of Sir Mark Cubbon, including letters to residents in Mysore, G.C Talbot (Private Secretary to Lord Canning), to the Government of India (Foreign department), the Rajah of Mysore and the Governor-General. Incoming correspondence from G.C. Talbot, Lieutenant Colonel G. Fryer (Secretary to Indian Government) and the Government of India. Further items include a report on the horse of the Indian Cavalry and sundry despatches and letters regarding Mysore. (1832-1860).
- Fol.29. Papers of Sir Mark Cubbon including correspondence from the Commissioner at Nagpur and from inhabitants of Mysore. Further items include correspondence from Sir Mark to 'My Lord' (1846) and to the residents of Bangalore. Other correspondence from various individuals (including the Manx Museum) relates to Sir Mark's character, his work in India, his death and the unveiling of his statue in Bangalore, India. Also present are an extract from 'Men and Events of my Time in India' by Sir R. Temple, press notice from the Madras Times (1860), The United Services Gazette (1853), newspaper cutting on Sir Mark's leaving of Mysore, a farewell address (translation) and notes and slides for a lecture on Sir Mark. (1840s-1880s).
- Fol.30. Miscellaneous items related to India are present such as minutes, correspondence, memoranda, reports of expenses, statement of costs, pay and allowances and a roll of officers for various sections of the Indian Army. Correspondence of various individuals includes the Rajah of Mysore to the Governor-General and to Lord Dalhousie, Colonel Low to Lord Dalhousie and Lord Canning to the Secretary of State of India regarding matters with the kingdom of Mysore. Notification of the cultivation of coffee in Mysore, a memorandum regarding the taxation on coffee, a blank form for birth certificate of an Hon. East India Company cadet, an appeal for funds for the relief of distress in the Scottish Highlands (March 1847) and newspaper cutting are further miscellaneous items present. (1830s-1860s).
- Fol.31. A family journal created by the Kermode family of Ramsey called Ny Irey Lhaa ('The Rising Day'). Canon Mark Wilks Harrison's (great-great-great grandson of Revd James Wilks) mother (Mary Ann Emily Kermode) was the daughter of Revd William Kermode (1814-1890), Rector of Ballaugh (1877-1890) and sister to the Manx poet Josephine 'Cushag' (1852-1937) and Philip Moore Callow Kermode (1855-1932), Manx archaeologist and founder (and first director) of the Manx Museum. (1870s).
- Fol.32. Miscellaneous items such as correspondence of Red Mark W Harrison (1945), an extract from Maughold Register, an account of Glebe of Maughold (mine), notes on Maughold and a farm, ecclesiastical items and the will of Edward Christian (1734).
- Fol.33. A notebook on Isle of Man fossils.
- Fol.34. Proclamations and legal items such as, proclamations for public thanksgivings, bounties and Acts on herring fishing, customs, smuggling and regulating trade and manufacture on the Island. (1760s-1870s)
- Fol.35. A book of the Spiritual Laws and Customs associated with the Isle of Man (1759).
- Fol.36. Minutes of the Secret and Political Department, India (1821-1826).
- Fol.37. Manuscript description of Iceland, written c.1810-1825. Possibly belonging to Revd Harrison.
- Fol.38. Two volumes containing copies of despatches from Sir Thomas Munro (1761-1827) to Lord Amherst (1773-1857) and others; covers the First Burmese War. (1821-1825).
- Fol.39. A receipt book belonging to William Cubbon for home-made medicines (1756).
- Fol.40. A small diary of 'Minnie' (Mary Anne Emily née Kermode) Harrison.
- Fol.41. A report of the Annual General Meeting for the Isle of Man Railway Company (1921).
- Fol.42. A bill and cheque in payment of tithes.
- Fol.43. An envelope from Miss Cubbon containing a lock of hair.
- Fol.44. An envelope addressed to Lieutenant General Mark Cubbon containing a lock of hair.
- Fol.45. Notebooks (possibly Canon Mark Wilks Harrison's) containing notes on private matters, farming, Douglas Chapel, Manx history, place-names and Manx folklore.