Papers of Stuart Rendel and family members, including papers relating to the University College of Wales, Aberystwyth, and the proposal to establish the National Library of Wales and its development during the early years of its existence, 1883-1916; speeches, addresses and political papers relating to disestablishment of the church in Wales and the 1889 Intermediate Education Act, 1882-1909; press cuttings, 1881-1913; photographs, 1892; miscellaneous letters, 1878-1912; letters to Stuart Rendel, 1853-1912, including letters from A. C. Humphreys Owen, 1877-1905, family letters, 1853-1902, and letters from prominent political figures and Welsh public figures; letters and copies of letters from Rendel, 1880-1912; diaries, mainly recording details of Stuart Rendel's business activities, 1863-1869; notes of conversations with W. E. Gladstone, John Morley and H. H. Asquith, 1888-1910; papers relating to Chinese affairs and French and Chinese peace talks, 1884-1886; papers of James Meadows Rendel, including letters, 1828-1856, and papers relating to his estate, 1856-1859; letters of Catherine Jane Rendel, 1845-1855; letters and papers of George Wightwick Rendel, 1871-1902; papers relating to Rendel's other brothers, 1841-1889, and his daughters, 1882-1910; letters and papers of Harry Stuart Goodhart-Rendel, 1898-1959, and other papers concerning him, 1963-1977; papers, mainly letters, of the Goodhart family, 1819-1957; papers of Miss Rosemary Rendel, 1986-1996; papers of Sir George William Rendel, including: Foreign Office papers, 1917-1967, correspondence, 1912-1973, papers relating to the Catholic Union of Great Britain, 1942-1979, lectures, diaries and notes, 1915-1954, personal and family papers, 1908-1980, and material relating to the book The Sword and the Olive (1957), 1954-1986.

Stray items relating to Major Edgar Jones (1868-1953), father of Gareth Vaughan Jones, and headmaster of the Barry Boys' County School from 1899 until his retirement in 1933. They include a small quantity of correspondence on a wide range of subjects, including letters from Gwilym Davies, undated; Sir Owen M. Edwards, 1916; W. Goscombe John, 1952; Dr Thomas Jones CH, 1925, 1947, 1950, 1951 and 1952 (many referring to the University College of Wales, Aberystwyth); and Sir John Edward Lloyd, 1929 (relating to the Welsh Language Society). Many of the letters refer to educational themes. There are also two letters, both dated 1953, from Major Edgar Jones to his daughter Eirian Lewis, mother of Dr Siriol Colley. There are also some tributes to Major Jones upon his death in 1953.

Records of the National Curriculum History Committee for Wales, 1978-1995, including papers relating to the establishment and subsequent meetings of the National Curriculum History Committee for Wales, 1989-90; minutes, agenda, reports and articles for discussion at various meetings of the National Curriculum History Working Group, 1989, the History Development Group, 1990, The Historical Association, 1986-89, and the Association of History Teachers in Wales, 1988-9; copies of a WJEC report and examination papers, 1986-93; papers relating to assessment by the School Examinations and Assessment Council, 1989; correspondence from MPs and others, 1988-91; miscellaneous articles, reports, press cuttings and papers relating to teachers' conferences, 1978-93; and printed material on the teaching of history in Welsh schools, 1979-95.

Correspondence, papers and reports, 1968-1979, concerning publishing in the Welsh language, including correspondence between the Publishers' Section of the Union of Welsh Publishers and Booksellers, Secretaries of State for Wales and the Welsh Office, the Welsh Books Council, and the Welsh Arts Council regarding grants for publishing Welsh books for adults and schools (items 6, 11, 12, 13); and correspondence, 1968, respecting a memorandum on the Gittins Report on Primary Education in Wales submitted by the WJEC to the Secretary of State for Education and Science, which contained a recommendation that a new publishing unit be set up to print and publish children's books in Welsh (item 1).

Reports, 1915, on the subject of the teaching of agriculture in county secondary schools; translations of a portion of Morgan Lloyd ('Morgan Llwyd o Wynedd'): Llyfr y Tri Aderyn submitted for competition at the University College of Wales Celtic Society 'eisteddfod', 1900.

Papers of Sir Ben Bowen Thomas (1899-1977), educationalist and public servant, comprising autobiographical material on his career, interests and family, 1954-1972; biographical articles and an interview, 1964-1966; letters to his wife and daughter with references to his work with UNESCO and Welsh educational matters, 1947-1960; letters from Dr Thomas Jones and Sir Percy E. Watkins relating to educational issues and Coleg Harlech, 1926-1955; correspondence concerning BBT's work with UNESCO, 1954-1962; miscellaneous correspondence, 1948-1976; addresses and speech notes, 1949-1977; pamphlets, offprints and articles, 1941-1973; research notes on regions and towns of Wales during the 18th and 19th centuries; circulars, articles, reports, etc. relating to education and educational bodies in Wales, 1942-1975, to UNESCO, 1946-1958, and to public and cultural bodies such as the Welsh Language Council, ITA and the Rural Development Board, 1965-1973; McNair Report on the Training of Teachers, 1942-3; memorials, tributes and obituaries of other educationalists; and miscellaneous press cuttings and notes. The archive also includes a collection of sermon notes and exercise books of his grandfather, the Rev. Benjamin Thomas, (1838-1913), a Baptist minister in Ystrad Rhondda, Glamorgan.

Papers of Sir Evan Vincent Evans, 1880-1933, including correspondence, 1881-1927 (comprising general correspondence to Sir E. Vincent Evans, 1881-1927, letters relating to the Ignatius Williams manuscripts, 1906-1922, drafts and copies of letters from Vincent Evans, 1893-1927, letters addressed to others, 1892-1923; and miscellaneous letters, 1894-1927, mainly those with unrecognisable signatures); bibliography of Welsh printed books, 1701-1807; minutes of the Board of Celtic Studies, 1933; records of the Diphwys Slate Quarry, 1924-1927; papers relating to education in Wales, 1887-1888; the London Committee of the Cardiff Medical Society, 1890; the National Eisteddfod of Wales, 1887-1926; the National Library of Wales, 1924-1927; the National Museum of Wales, c. 1900-1928; the Royal Commission on Ancient Monuments in Wales, 1911-1933; Royal Commission on Public Records, 1914-1916; the Society for the Promotion of Nature Reserves, 1914; the University Board of Celtic Studies, 1922-1927; the University of Wales, c. 1893-1927; the Vincent Evans Testimonial Fund, 1898-1899; and the Welsh Club, 1893-1913; together with copies of speeches and addresses delivered by Vincent Evans; and miscellaneous papers, [c. 1880]-[1930].

A statement on 'The position of the Teachers in relation to Examinations' for a Central Welsh Board Conference, 1915.

Papers of Tom Owen, HMI, of Aberystwyth, Cardiganshire, 1898-1966, mainly relating to his career in education, including inspector's reports on schools in Montgomeryshire, 1946-1950; reports on St. David's College, Lampeter, Cardiganshire, 1907-1945; and personal papers, 1898-1966.

Papers of Trevor Lovett, 1943-1980, relating mainly to secondary education, including personal papers 1944-1970; papers relating to Holyhead County Secondary School, 1949-1971; papers relating to secondary education in Anglesey, 1959-1980; press cuttings relating mainly to comprehensive education, 1945-1975; together with other papers relating to comprehensive education in England and Wales, 1962-1976, and miscellaneous papers, 1943-1969.

Papers of Victor Hampson-Jones, 1881-1975, comprising lectures and speeches, 1966-1973, teaching notes, radio scripts, 1966-1975, material relating to lawsuits and tribunals involving trades union members, 1960-1975, material relating to Undeb Cenedlaethol Athrawon Cymru, 1953-1972, and personal and family papers, 1881-1973.

Records accumulated by Dr John Herbert, 1968-1984, comprising Welsh Secondary Schools Association records, minutes and papers, 1968-1984; and Headmasters' Association and Secondary Heads Association minutes, correspondence, discussion papers and related material, 1969-1984.

Papurau Cynog Dafis, yn cynnwys gohebiaeth gyffredinol,1964-1973, ffeiliau yn ymwneud ag addysg, 1961-1982, ffeiliau yn ymwneud â chynghrair Plaid Cymru/Y Blaid Werdd yng Ngheredigion, 1991-1997, papurau, 1996-1997, yn ymwneud ag etholiad cyffredinol 1997, areithiau, ymgyrch llywyddiaeth Plaid Cymru ac etholiad Cynulliad Cenedlaethol Cymru 2007 = Papers of Cynog Dafis, including general correspondence, 1964-1973, files relating to education, 1961-1982, files relating to the Plaid Cymru / Green Party alliance in Ceredigion, 1991-1997, papers relating to the 1997 general election, 1996-1997, speeches, campaign for the role of President of Plaid Cymru and the National Assembly for Wales election 2007.

Derbyniwyd papurau ychwanegol sydd dal heb eu catalogio = Addition papers received remain uncatalogued.

Papurau T. Ll. Stephens, 1928-1959, yn cynnwys yn bennaf cyfansoddiadau llenyddol, a hefyd papurau'n ymwneud ag addysg, addysg ddwyieithog a Dewi Emrys, ynghyd a grŵp bach o lythyrau a phapurau eraill Dewi Emrys,1940-1953 = Papers of T. Ll. Stephens, 1928-1959, mainly comprising his literary compositions, and also including papers relating to education, bilingual education and Dewi Emrys, together with a small group of letters and other papers, 1940-1953, of Dewi Emrys.

Papurau'n ymwneud â Rhieni dros Addysg Gymraeg, 1963-1988, yn cynnwys copïau o gofnodion, 1963-1988, y Cyfarfodydd Cyffredinol Blynyddol a chofnodion y Pwyllgor Gwaith; adroddiadau blynyddol, 1984-1988; copi o gyfansoddiad y grŵp a luniwyd yn 1983; gwahanol adroddiadau a baratowyd gan y grŵp, 1983-1988; ac adroddiadau a baratowyd gan bwyllgorau sir y mudiad, 1981-1987. = Papers relating to Rhieni dros Addysg Gymraeg1963-1988, including copies of minutes, 1963-1988, of the AGMs and the executive committee minutes; annual reports, 1984-1988; a copy of the group's constitution prepared in 1983; various reports prepared by the group, 1983-1988; and reports prepared by the movement's county committees, 1981-1987.

Papurau ychwanegol gan gynnwys papurau'r Gynhadledd Flynyddol, 1983-1987; cyfrol yn cynnwys cyfansoddiad 'Undeb Rhieni Ysgolion Cymraeg', a chofnodion cyfarfodydd, 1963-1982; a papurau Taflen 'Holi ac Ateb'. Nid yw'r papurau hyn wedi eu catalogio eto.