Teipysgrifau a thorion, 1952-1959, o'i ysgrifau yn y golofn 'Rhwng Godro a Gwely' a gyhoeddwyd yn Y Cymro yn wreiddiol, ac fel casgliad gyda'r un teitl wedi'u golygu gan Eirwen Gwynn yn 1994.

Papurau ymchwil Elfyn Jenkins, 1950-1955, yn ymwneud â thafodiaith Llŷn, sir Gaernarfon, a fwriadwyd ar gyfer gradd MA, gan gynnwys drafftiau llawysgrif a theipysgrif o'r traethawd anorffenedig = Research papers, 1950-1955, of Elfyn Jenkins relating to the dialect of Llŷn, Caernarfonshire, intended for an MA degree, including manuscript and typescript drafts of the unfinished thesis.

Miscellaneous talks and radio scripts, 1922-1938, by Owain Llew Owain, including two addresses prepared for 'Clwb Awen a Chân', 1922 and 1927, four drafts of an essay entitled 'Beirdd Gwerin Arfon', a radio script, 1938, entitled 'A programme of Welsh rounds by Wythawd y Bonc', and a radio script containing the reminiscences of three sea captains, bearing the title 'Hwylio ar Led: Morwyr y Felinheli'.

Minute-book, 1796-1909, of the trustees of the charity created by the will of Ellen Glynne of Elernion, parish of Llanaelhaearn, co. Caernarfon, spinster, respecting the almshouse at Llandwrog and property in the parishes of Llandwrog and Llanllyfni, co. Caernarfon, and in the parish of Llangoed, co. Anglesey. The minutes include details of admittances to the almshouse and details of tenants, rents and repair of trust property. Also included in the volume are copies of the will, 1727, with codicils, 1728 and 1732/3, of Ellen Glynne, proved at London, 1733 (tipped in between ff. i and ii; ff. 1-6v).

A copy of H. Ivor Jones: Hanes Annibyniaeth yn Sir Gaernarfon hyd ddiwedd y ddeunawfed ganrif (Caernarfon [circa 1897], cut up and mounted, with photographs of ministers, preachers, etc. added in the margins, and with some press cuttings.

Most of the letters, 1901-1920, are sent on behalf of the family legal practice Lloyd George and George, requesting J. H. Davies's opinion on legal cases and the estates of a number of deceased persons.

Papers relating to the activities of the Welsh Baptist Young Men's Society in Liverpool and District, 1878-1881; a programme of the inauguration meeting of the new building of the Liverpool Young Men's Christian Association, 1877, and a 'promises card' for December 1883; papers relating to temperance meetings in Liverpool, 1879, a circular entitled 'Cenhadaeth Ddirwestol Cylchdaith Caernarfon ... 1897'; and a handbill for a series of temperance meetings held at Denbigh, 1899.

Minute books, correspondence and papers, 1953-1992, relating to the Conservative Party in North Wales, including general political papers and circulars, 1971-1989; papers of the North Wales European Election, 1989; news sheets produced by the Brecon and Radnor Conservative Association, 1963-1972; papers relating to the training of constituency agents, 1970-1978; minutes and correspondence of the executive council of the Caernarvon Division of the Conservative and Unionist Association, 1953-1992; papers concerning the Pwllheli Conservative Club, the Association's Annual General Meetings, briefings and reports, 1982-1992; papers including minutes of the executive council and other committees; correspondence, circulars, memoranda, balance sheets of the Conway Constituency Conservative and Unionist Association, 1967-1982; minutes of the Llandudno Junction branch, 1951-1986; records of the Denbigh Constituency Conservative Association, 1974-1982; papers of the National Society of Conservative and Unionist Agents, both the National and Wales and Monmouthshire branches, 1970-1980; and minutes of the North Wales European Constituency Conservative Council, 1978-1989.

Deeds, documents and letters, 1638-1897, relating mainly to properties in Denbighshire and Shropshire, but also Caernarfonshire, Cardiganshire, Montgomeryshire, Merionethshire, Radnorshire and Cheshire; plans relating to the activities of railway companies mainly in the parishes of Gresford and Wrexham, Denbighshire, 1845-1849; and printed material, 1863-1897.

A list of Caernarvonshire place-names taken from ordnance survey maps and other sources, 1899-1900.

Photostat copy, [20 cent., first ½], of declarations and oath taken by the Rev. John Jones of Taldrwst, Talysarn, Caernarvonshire, as a Dissenting Minister, 20 October 1824.
The original document is NLW, CMA Bala College 1/788.

Five pocket books containing notes by J. R. Williams, Rhosgadfan, of proceedings at monthly meetings within the Arfon C. M. Presbytery, 1922-1930.

Rentals of the Clenennau, Glyn, Sylfaen and Ystumcegid estates, [1535x1572]-1849. They cover Eifionydd [1535x1572] and Clenennau, 1551-1689, combined with Brogyntyn, Llanddyn and lands in Anglesey from 1589 to 1606; Glyn, 1623; Ystumcegid, 1692-1723; and Clenennau, Glyn, Sylfaen and Ystumcegid, 1690-1849. Gest disappears from the rentals by 1678, which is consistent with Sir Robert Owen's loss of the township to William Price of Rhiwlas. Sir Robert married Margaret Wynn in 1683, but Glyn and Sylfaen in Merionethshire do not appear as joint property until 1690. Some of the Clenennau and Glyn properties appear collectively as the Merionethshire estates from 1727. Likewise by 1749 some of the other Caernarfonshire properties are not distinguished separately from Ystumcegid. From 1779 to 1804, the idividual properties are not identified, but the tenants' names are listed under the vague headings of 'Caernarfonshire estate' or the Merionethshire estate'. The purchased property of Dolbenmaen is incorporated from 1742 and part of the Shropshire and Denbighshire estates are included in 1773. Additions in the form of allotments and encroachments are in evidence from 1832. Several of the rentals incorporate accounts of arrears and repairs to property.

An essay entitled 'History of the Knights of the County of Carnarvon from 1542 to 1870' written by an unknown author, n. d., under the pseudonym "Rossell of Isgorfai".

A volume of transcripts of leases, grants, charters, etc., 1704-1755, relating to the issues and profits of the origianl seal for cos. Caernarvon, Anglesey, and Merioneth, and of sums of money payable for fines and recoveries levied in the said counties, compiled for reference by William Wynne, serjeant at law, who was granted a lease of the original seal in 1729. The volume is indexed.

A typescript dissertation entitled 'A General Survey of the Slate Industry of Caernarvonshire and Merionethshire', by William Morgan Richards, Portmadoc, 1933.

A mutilated bill book, 1840-1848, of Edward Rumsey Williams, solicitor, Caernarvon. Among the subjects to which the accounts refer are the engrossment of the agreement of tithe commutation for the parish of Llanbadrig, Anglesey, and the execution of conveyances, etc. of properties in Dolbenmaen, Llanfihangel y Pennant, Caernarvon, Bontnewydd, Llanbeblig (including a piece of ground for the building of a school), Pwllheli, and Llanfair is gaer, Caernarvonshire, Llandegfan, Anglesey, Flint, Flintshire, etc.