'Calendar of all The High-Sheriffs for The County of Carmarthen and of all the Mayors, Bailiffs and Sheriffs of the Corporation of Carmarthen from the year of Our Lord 1400 to 1818 ...'; genealogical notes and tables largely of South Wales families, with numerous notes and annotations by Stedman Thomas; etc.

Records of the Cambrian Archaeological Association, including minute books, 1847-1989; committee attendance books, 1920-1975; agenda books, 1921-1947; correspondence, 1846-1989; treasurer's records, 1895-1982; members' papers and registers, 1930-1988; general secretary's papers, 1958-1989; conference papers, 1967-1983; and publication records, 1931-1988.
Additional records of the Association, 1989-1998, were received. This group remains uncatalogued.
Further records of the Cambrian Archaeological Association were received. These remain uncatalogued.
CAA records received as a Bequest from Donald Moore per Christopher Moore, April 2015,9 large archive box.

Cân newydd yn gosod allan y modd y darfu Huw Prys a John Shon, dau o bysgotwrs glan Afon Dysynni yn Sir Feirionydd, orfodi hen Dori cydwybodol i addaw pleidleisio o blaid yr Yswain Dafydd Williams, Castell Deudraeth, yn etholiad 1868, the song possibly by Edwin Jones, Tywyn (Meirionnydd), afterwards of Aberystwyth.

An extract translated into staff notation by Arnold Dolmetsch from British Museum Additional MS 14905, 29 January 1935.

The original manuscript score of a cantata - 'Gwarchaead Harlech' - by Joseph David Jones, Ruthin (1827-70).

A minute-book, 1905-1925, of Ebenezer Welsh Baptist church, Merthyr Tudful, co. Glamorgan.

Account book of Wern Welsh Congregational church, Ystalyfera, co. Glamorgan, containing general accounts and miscellaneous memoranda, 1894-1911.

Material relating to the proposed Cardiff Bay Opera House (and later, the Wales Millennium Centre), reflecting the Welsh National Opera's involvement in various aspects of the planning process and initial architectural design competition. Material includes news cuttings; professional newsletters; feasibility studies; project speculations and reports; architectural drawings; competition briefs and guidelines; Trustee letters and correspondence with WNO, development partners (Cardiff Bay Development Corporation), architects (Office of Zaha Hadid), solicitors and members of the public; committee material including correspondence and minutes of Board of Trustees (1994-1996), Joint Fundraising Liaison Committee (1995), Client Group (1995), Finance Committee (1995), Access and Participation Committee (1995), Building Sub-committee (1995), Chairman's Committee (1995), Opera House Steering Group (1986-1990), Design Team (1994-1995) and Public Relations Committee (1995) meetings.

Records of the Cardiganshire Association for the Blind, 1920-1975, including record books of registered blind, 1920-1938; minutes of the executive committee, 1933-1974; minutes of the Annual General Meetings, 1940-1973; and annual reports, 1921-1975.

A register of criminals apprehended by Cardiganshire Constabulary, 1897-1933, with physical descriptions of prisoners and details of previous convictions. Photographs are included of most of those sentenced between 1897 and 1909.

Account books, 1869-71 and 1888-9, of cash receipts and expenditure on account of the highways in the districts or townships of Broncastellan, Cwmrheidol, Melindwr, Tirymynach, Trefeirig, Clarach, Vaenor Lower, Issa yn Dre, Parcel Canol, Vaenor Upper and Ucha yn Dre, all in North Cardiganshire.

The first of two volumes of cost books, 1866-85, of the South Darren Lead Mining Company.

Typewritten copies of reports by various engineers on the Frongoch, West Frongoch and Loveden lead mines, Cardiganshire, 1903-1905.

The second of two volumes of cost books, 1866-85, of the South Darren Lead Mining Company.

The cost book of the Cwm Sebon lead mine, 1856-1860, and of the South Darren Lead Mining company, 1860-1865.

Records of the Cardiganshire Liberal Association, 1921-1974, including minute books, 1923-1951; correspondence, financial and other papers, 1914-1974; electoral registers, 1951-1964; press cuttings of political interest, 1900-1963.

Miscellaneous papers, 1708-1893, relating to Cardiganshire, including a survey of lands and houses in Aberystwyth by Thomas Evans and John Richard, 1708 (ff. 1-2); particulars of tithe owners in north Cardiganshire, mid eighteenth century (ff. 3-7 verso); and minutes of a meeting of estate owners relating to enclosing the manor of Mefenydd, 1814 (ff. 11-12).

A calendar of plea rolls of the county of Cardigan, 1541-1609, compiled by H. J. T. Wood.

A petition, bearing almost eight thousand signatures, opposing the proposed building of a nuclear bunker at Carmarthen, December 1985.

Notebook, [1905x1930], of M. H. Jones, Penllwyn, Aberystwyth, containing lists of place-names in Carmarthenshire, arranged by letter and accompanied by etymological and philological notes, as well as detailed notes relating to older forms of names.
Notes found loose inside the volume have been placed in an archival envelope (ff. 144-145).