A scrap album containing holograph letters from E. O. Davies, Bangor, 1930, and J. Glyn Davies, Llandudno, 1930, and a circular letter from Nichol Grieve, secretary, Liverpool Free Church Centre, 1932; notes of an address on congregational singing; a 'final copy' of a resolution by the Liverpool Welsh Presbytery, [1932], and draft resolutions of condolence passed by the [North Wales C.M.] Association, [1937]; a typescript summary of sermons delivered at [Calvinistic Methodist] preaching services ('Cymanfa') at Chester, 1852; press cuttings of Liverpool interest; printed matter; etc.

Plans and surveys by Edward Andrew Downham (d. 1931) of ancient earthworks in Flintshire, Denbighshire, Montgomeryshire and Merioneth.

A volume compiled, 1798-[1808], by Henry J. Hughes, Llanbeblig, containing precedents of declarations, pleas, and other legal documents, together with cases and opinions and notes on replevin.
The precedents relate mainly to cases in Anglesey, Caernarfonshire and Merionethshire, [18 cent., second ¼]-[late 18 cent.]. The contents are listed on pp. iv-ix. An agreement to build a drain, 1829, is loose at the end of the volume (pp. 323-324).

Cyfrol llawysgrif yn cynnwys cofnodion, 1965-1974, Cymdeithas Esperanto Gogledd Cymru.

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.

Lists of grants, leases, etc., passed from the crown, of the revenues of North Wales, 1631-1702.

A chronologically-arranged date index to tombstones and monuments, memorial tablets and brasses, stone-work, wood-work, glass, bells, communion plate, alms dishes, etc. in churches and to some non-ecclesiastical domestic buildings, etc., mainly in North Wales.

A statistical summary, [1907], of church work and finance in the Diocese of Bangor during the year 1906-1907.
The volume presents total figures relating to work, income and contributions in the Archdeaconries of Bangor and Merioneth (ff. 1-4), followed by detailed statistics for individual parishes, arranged by Archdeaconry and Rural Deanery (ff. 5-36).

Deeds and documents, 1280-1797, relating to Shropshire, Cheshire, Denbighshire, Flintshire, Montgomeryshire and Staffordshire, together with genealogical, heraldic and antiquarian notes, compiled c. 1745-c.1766 and [mid 19th cent.].

Ten typescript articles and transcripts, 1973-1984, nearly all written or compiled by Dr Clare Taylor, Aberystwyth.
They comprise: (i) 'America 1851-1852', dated April 1973, a translation by Mari Ellis of the diary of Iorthryn Gwynedd (NLW MS 9521A), with an introduction by Clare Taylor; (ii) 'The Phillipps Manuscript: A Chapter in Early Welsh Migration to the West Indies and to the United States', 1973, a transcript of NLW MS 92B with an introduction by Clare Taylor (the introduction only was published, with the same title, in National Library of Wales Journal, 19.3 (Summer 1976), 243-248); (iii) 'A Description of Trinidad 1881-1882', 1973, a transcript of [?part of] NLW MS 17267D; (iv-vii) 'A Victorian Guide to Wales', 1973 and undated, four volumes containing transcripts from nineteenth-century trade directories of descriptions of individual parishes in Anglesey, Caernarvonshire, Denbighshire and Montgomeryshire; (viii) an article, 1979, entitled 'The Journal of an Absentee Proprietor: Nathaniel Phillips of Slebech', concerning NLW, Slebech Estate Records 4292-4302; (ix) 'Isaac Williams of Cardiganshire – the Christian poet – an introduction to his nature poetry', 1984, an article subsequently published in Transactions of the Honourable Society of Cymmrodorion (1986), 115-126; and (x) 'NLW MS 15505 Picton Papers and Letters', [n.d.], consisting of transcripts (and in some cases translations from the Welsh) of letters of Welsh-American interest in NLW MS 15505E, as well as NLW MS 14111D and elsewhere. Items i-iv and viii-ix are photocopied or cyclostyled, while v-vii and x are carbon copies.

Administrative records of the Brogyntyn estates, mainly in North Wales and Shropshire, [1380s]-1951. They relate to Clenennau, Glyn, Sylfaen and Ystumcegid in Caernarfonshire and Merionethshire, 1530-1902; Nant in Flintshire, [1380s]-1685; Brogyntyn (Porkington) in Shropshire and Llanddyn in Denbighshire, 1634-1951; Lea Hall and Brymbo in Shropshire and Denbighshire, 1586-1750; Abertanat, Cemais and Penrhos, mainly in Montgomeryshire, 1653-[c. 1949]; the Irish estates, 1775-1887, and miscellaneous estates, 1590-1938. The group includes rentals, accounts, leases, and other estate administration papers including those relating to property, exploitation of resources, livestock, staff appointments, enclosures and other improvements, surveys and valuations, and letters relating directly to estate management.

The autograph manuscript of an unfinished work on holy wells in North Wales written by Elias Owen, author of Welsh Folk-lore, The Old Stone Crosses of the Vale of Clwyd, etc. A few portions of the manuscript are in the autograph of the author's son, T. Owen.

A collection of traditions, anecdotes, and poems made circa 1870, by John Castell Evans, entitled 'Yr Hen Amser gynt, ei Veirdd, ei Varddoniaeth, ei Bobl a'i Chwedlau, sev Casgliad o hen Draddodiadau, Darnau Barddonol a Bywgraffiadau &c. yn dal cysylltiad yn benav a Gogledd Cymru yn enwedig Sir Merionydd ... Casglwyd, yn benav, oddiar lavar gwlad gan John Castell Evans, Pine Cottage, Millbrook, gynt o Gastell-y-Waen, Llanuwchllyn, Merion.'

Notes and correspondence relating to a survey on land reclamation in North Wales, [1913x1916], to which J. Lloyd Williams contributed. Notes specifically relating to Caernarfonshire and Anglesey and North Wales grasses are also included.

Seventy holograph letters, 1844 and undated, largely relating to geological studies in Wales and elsewhere, written to A. C. Ramsay by Sir H[enry] Thomas] de la Beche from London, Aberystwyth, Tregaron, etc., W. Talbot Aveline, Ludlow, H. W. B[ristow], Presteigne, etc., Edward Forbes, Geol[ogical] Society], J. P. Nichol [from Dowanhill Observatory], John Phillips, T[rinity] C[ollege], Dublin, etc., Lyon Playfair, from Manchester, etc., Warington W. Smyth, Bedford, Chelsea, Llandegley, Manchester, etc. (ref. to sulphurous waters at Llandegley), Trenham Reeks, Museum [of Economic Geology], James Sharpe and John Sharpe, Glasgow, etc., W. R. Steuart Williams, Llandovery, etc., and John Wilson, Haddington and Aberystwyth; together with thirteen holograph letters, 1844, and undated, largely of a personal nature, written to A. C. Ramsay by William H. Baily from [London], John H. Barry, Liverpool, his cousin John Crombie, Edinburgh, his cousin J. Crombie, from [Glasgow], T. Evans, Eleanor Howden , [Edinburgh] and Bangor (an account of a tour of North Wales), G. McGlure, Helensburgh, Thomas Nimmo, Berbice [British Guiana], T. Todrick, Haddington, and W. Walton, Bath, a copy of a letter, 1844, from George Jones of the British and Foreign Institute to 'Mr. Punch', and a letter, 1839, from And[rew] C. Ramsay, Glasgow, to 'Robin' [Howie] (personal) ( found in the portable desk of Dr. Howie and re-addressed to the writer from Glasgow, 1844). Some of the letters are addressed to the Geological Museum, Charing Cross, London, and to the Ordnance Geological Survey at Dolau Cothi, Builth, and Rheadir Gwy.

Particulars, sent by Eryrian to Gwilym Hughes, secretary of the Cardiff National Eisteddfod, 1899, of an unpublished work on the folk-lore of North Wales prepared by him

The file comprises letters from Communist Party members in Deeside, Abergele, and Aberystwyth, and from officials of the North Wales Area Communist Party.

A file of printed items and typescripts relating to the North Wales Hydro Electricity Power Bill, including several petitions against the Bill.