Records of the Association of Welsh Local Authorities, 1928-1976, including minutes of annual meetings, 1952-1973; minutes of council meetings, 1952-1973; cash books, 1958-1973; administration papers, 1953-1976, papers relating to the withdrawal of railway services in Wales, 1962-1970; and subject files, 1952-1974, relating the interests and activities of the Association, such as water resources, transport, education, and the Welsh economy.

Papers, 1889-1988, of Ben G. Jones, including academic notes, 1932-1935; personal letters, 1942-1968; political papers, 1935-1985; correspondence relating to politics in Merionethshire, 1963-1967; press cuttings, 1958-1963, printed material relating to the four main political parties in Wales, 1949-1966; papers relating to the Honourable Society of Cymmrodorion, 1939-1988; minute book, 1889-1909, of the London Welsh Mutual Improvement Societies' Union; papers deriving from the compilation and publication of the Dictionary of Welsh Biography, 1953-1986; papers relating to his public life, 1968-1984, including the Kilbrandon Commission, 1936-1969, the BBC, 1968-1978, UCW Aberystwyth, 1968-1985, and the Agricultural Land Tribunal, 1980-1984; minute book, 1889-1909, of the London Welsh Mutual Improvement Societies' Union; and papers relating to the status of the Welsh language and to teaching and broadcasting through the medium of Welsh, 1965-1987.

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.

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.

Papers of D. A. Thomas, Viscount Rhondda, including letters to D. A. Thomas on political matters such as working conditions in the mining industry, education, church disestablishment, and the temperance movement, 1891-1910 (mainly 1891-1895); drafts and copies of letters from D. A. Thomas on similar subjects, 1891-1895; miscellaneous letters, 1893-1895; subject files, 1874-1917, on the coal industry, including the Cambrian Navigation Collieries, the Mining Association of Great Britain, the South Wales Liberal Federation, temperance and disestablishment; scrapbooks of press cuttings, 1894-1927, relating to Cymru Fydd, D.A Thomas, Merthyr politics and Keir Hardie, the Lusitania, and Lady Rhondda; miscellaneous items, 1897-1934, including genealogical material and congratulatory addresses to D.A.T.; circulars and memoranda.

Press cuttings relating to Wales and Welsh culture, such as religion, politics, literature, music, education, St. David's Day celebrations and the Eisteddfod Genedlaethol, individuals, and the National Library of Wales [1895]-[1939].

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.

Diaries etc, 1903-1930; sermons; addresses and articles, 1916-1948; correspondence, notes and articles relating to penal reform, 1907-1917, Ireland, 1920-1924, education, 1925-1931, reparations, 1926-1931, Tom Nefyn Williams, 1926-1931, and the Fellowship of Reconciliation, 1916-1947; poetry, 1900-1947; genealogical and miscellaneous notes and family papers, 1884-1926; articles and addresses by various authors, 1903-1949; letters to and from George M. Ll. Davies, other members of the family and others, 1826-1964.

Records accumulated by John Clement as a civil servant, 1942-1958, including records of the Welsh Reconstruction Advisory Council, 1942-1945; records relating to education and hill sheep farming, 1942-1943; papers relating to the Welsh woollen industry, 1954-1958; and records relating to the Council for Wales and Monmouthshire, 1954-1958.

A further box of papers was received August 2007. This group remains uncatalogued.

The collection comprises John Owen's diaries, 1889-1926; notebooks containing press cuttings, accounts, extracts from the Bible and historical notes; and an address book (box 1); the memoirs of John Owen entitled 'College Friends', letters, 1872-1894, including many letters concerning the tithe rent charge, papers on the 1889 Welsh Intermediate Education Bill (box 2); a catalogue of the books in the library of Bishop John Owen, 1908, speeches, draft speeches and sermons, letters and papers relating to the disestablishment and disendowment of the church in Wales, papers concerning educational matters, 1891-1895 (box 3); letters, 1893-1897, many on religious matters, including issues of church reform, some of family interest, some congratulating John Owen as Bishop of St Davids in 1897 (box 4); an incomplete manuscript, the final printers' copy and the typescript text of 'The Early Life of Bishop Owen' (box 5); letters, 1898-1905, some relating to sermons and prayers following the death of Gladstone, the 1902 Education Bill, church defence, the fire at the Bishop's Palace at Abergwili in 1903, the new Bishop of Llandaff in 1905, and matters of diocesan interest, and there are also papers, 1904-1905, concerning education, Lloyd George and the Western Mail (box 6); letters, 1897-1914, some relating to the proceedings of the Welsh Church Commission, diocesan matters, church defence etc. (box 7); correspondence and papers, 1914-1917, many relating to the disestablishment and disendowment of the Church in Wales, the Welsh Church Act, 1914, and related matters (box 8); letters, 1906-1915, some relating to the role of the church in politics, education, church defence, the Welsh Church Bill etc. (box 9); correspondence and printed material, 1914-1919, concerning disestablishment, the Welsh Church Act, the Postponement Bill and the war, the tithe and disendowment (box 10); letters and papers, 1910-1926, concerning the tithe and the Welsh Church Bill, the Welsh Church Act, the Church Commissioners, matters relating to the diocese of St Davids (box 11); bundles of letters, 1922-1926, relating to church and diocesan matters, disestablishment and finance (box 12); correspondence and papers, 1914-1926, relating to disendowment, the government of the Church in Wales, the constitutions of the Governing Body and the Representative Body of the Church in Wales, drafts, notes and correspondence concerning 'The Later Life of Bishop Owen' (box 13); papers, 1907-1918, concerning Bishop Owen's life and work, including the typescript draft of 'The Early Life of Bishop Owen' (box 14); typescript drafts of 'The early Life of Bishop Owen' (box 15); manuscript texts of 'The Later Life of Bishop Owen', and miscellaneous source materials relating to Bishop Owen's life and work (box 16); papers concerning church matters, 1889-1925, including material relating to the Ecclesiastical Commissioners, the Representative Body of the Church in Wales, the 'Diocesan Board of Finance', the 'Million Pound Fund' appeal, commutation capital, the St Davids Board of Finance etc., together with the correspondence of Miss Eluned Owen, 1954-1965 (box 17); papers relating to voluntary and parochial contributions, 1905-1908, together with an extensive collection of press cuttings (box 18).
Additional papers (boxes 19-21) comprising the letters of Bishop John Owen, his wife Amelia Owen and their family, together with the recollections of their daughter, Gwenonwy Davies, and of her husband the Very Reverend J. T. Davies, Dean of Bangor, were received in August 2017.

Twenty holograph letters addressed largely to David Davies. The writers include S[amuel] Price Davies [son of Sir David Davies], Bickling Vicarage, Bishop Stortford, and London, 1847-1848 (2) (Rhosybedw estate matters, the writer's visit to Frood Vale, the thinning of 'Galt Hugh Shon', personal), Henry Heald, London, 1848 (2) (the production of title-deeds of the Llwyn estate) (together with a copy of a letter from Messrs. Hill & Heald, London, to John Morgan, solicitor, Llandovery, 1848, relating to the same), Henry Jones [of Llwyn], from Abermeurig, undated (2) (money matters, rumours of a discovery in London of a box belonging to an old woman at Cayo and supposed to contain gold), [the Reverend] Richard Jones, Llanyblodwel, etc., 1846-1848 and undated (8) (one addressed to his brother Henry) (the management of the Llwyn estate, Sir David Davies's opinion of the writer, the success of the writer's son, the progress of the Llandovery Institution and its contribution to education in Wales), George Lloyd, Brunant, 1838 (3) (the writer's claim for payment of principal and interest on a bond), J. E. Morgan [niece of Sir David Davies], Berkeley Street [Berkeley Square, London], [1848] and undated (2) (money matters, thanks for a couple of woodcocks, the illness of the writer's cousin), and Josh. Tyler, Grays Inn, 1838 (an opinion on Mr. Lloyd's claim).

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.

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

A ledger, 1877-1888, kept by Edwin Jones, showing detail the expenses incurred by boarders at Brynarvor School, Towyn, a printed prospectus of Brynarvor School, and a time table of evening classes held, 1881-1882.

One of two volumes comprising a group of two hundred and twenty-four autograph letters and copies and fragments of letters covering the period 1823-1917 and addressed chiefly to 'Nefydd'. -- There are references to British Schools at Holywell, Abertillery, Llanelly, and Pantyphilip; a proposal to transfer Ellis Evans's Baptist manuscripts to Llangollen Baptist College; a proposal to publish the works of 'P. A. Môn'; Baptist activities in America and Australia; the Baptist cause at Caerleon and in Monmouthshire generally; a proposal to safeguard 'Carnhuanawc's library; and the Vronissa Lead Mine, Ruthin. David Morris, writing from Tasmania, states that on the night of his wife's funeral he was given ten shillings by 'Shoni Sgubor Fawr'. -- The writers include: D. Oliver, Merthyr; J. G. Owen, Brynsaithmarchog; Wm. Palmer, Liverpool; Edw[ard] Parry, Chester; D. Phillips, Caerleon; Philip D. Phillips, Utica, New York; Ben Price; Thos. Price, Aberdare; John Prichard, Llangollen; David Rees, Llanelly; Edward Roberts ('Iorwerth Glan Aled'), Denbigh and Rhumney; Edward Roberts, Haverfordwest; [John Roberts, Tredegar]; W. Roberts, Tredegar; 'Nefydd' to [Jane Williams, Aberpergwm], John Michael, Abergavenny, Robert Ellis ('Cynddelw'), etc.; Lewis Thomas, Port Adelaide, South Australia; J. R. Loomis, University of Lewisburg, and P. L. Davies, Camden, Pennsylvania, with copy replies; Jas. Rowe, Risca and Fishguard; Robert Saunders, British and Foreign School Society, London; James Spencer, Llanelly; D. Rhys Stephen, Swansea; 'Teilo', Llandilo; Evan Thomas, Maesaleg; George Thomas, Pontypool; [John Thomas] ('Eifionydd'); John Thomas, ('Pencerdd Gwalia'); John Thomas, Llanelly; J. Thomas, Liverpool; W. Thomas, Newport; T. E. Watkins ('Eiddil Ifor') to the editor of The Monmouthshire Merlin; B. Williams, Merthyr; Edward Williams, Aberystwyth; H. Williams, Bettws; Hugh Williams, Pentrebach, Pontypridd, to Caleb Lewis and 'Ap Nefydd'; J. Williams, Rhos; John Williams, Newtown; Lewis Williams, [Llanddulas]; J. Mostyn Williams, Liverpool; J. O. Williams ('Pedrog') to Evans; M[aria] J[ane] Williams, Ynislas [and Aberpergwm]; Owen Williams, Holywell; William Williams ('Creuddynfab'); etc.

A group of forty-two autograph letters, 1839-72, addressed chiefly to 'Nefydd', and similar in character to those earlier groups of 'Nefydd' letters which have been previously described (NLW MSS 7163-6, 7176-7). -- The writers include: 'Ceinwalch', Llanover; J. C. Davies, Holywell; Christmas Evans; John Evans, Llansantffraid Glan Conwy; Dd. Griffiths, Cwmavon; Thomas Griffiths, Cae Newydd; Anne Hiley, Varteg; J. Hiley, Llanwenarth; H. E. P. Hughes, Neath; 'Ieuan ap Gruffydd', London; Daniel Jones, Risca and Llanelly; Jane Rowland Jones, Liverpool, and 'Elin'; Jane Jones, Llanelly, Cowbridge, and Cross Inn; J. Jones, Zion, Merthyr; Josiah Thomas Jones Carma, and Aberdare; Theophilus Jones, Philadelphia; Wm. B. Jones, Emporia, Kansas; L. W. Lewis ('Llew Llwyfo'); [John Owen] 'Owain Alaw', Chester; John Prichard, Llandudno, to Ellis Evans; A. Roberts [sister of 'Nefydd']; 'Nefydd' to his wife and to Daniel Jones; D. Rhys Stephen; Eliza Hannah Thomas, Cross Inn, to Eliza Jane [Roberts]; Thos. Thomas, Pontypool; [David Williams] 'Alaw Goch' Aberdare; J. Williams, Newtown; J. Williams, Rhos, to Ellis Evans; Owen Williams, Holywell; and [William Williams] 'Creuddynfab'.

A notebook containing three addresses in Welsh by Philip Thomas entitled 'Braslun o Hanes Caniadaeth Grefyddol yn Nghymru' (f. 1-9 verso), 'Y dull goreu o gyfranu addysg i blant' (ff. 10-14 verso), and 'Holi' (ff. 15-21), delivered to Cymanfa Gerddorol Methodistiaid Dosparth Castellnedd, Good Friday, 1891, Cyfarfod Daufisol Ysgolion Sabbothol Methodistiaid Castellnedd at Fforest, Aberdulais, January 1891, and Cyfarfod Daufisol Castellnedd at Bethlehem Green, 7 May 1893, respectively; and 'The Laws of Questioning', notes taken from a work by Dr Vincent (ff. 22-24 verso).

Addresses by Philip Thomas entitled 'Beth fedr yr Ysgol Sabbothol ddysgu oddiwrth yr Ysgol ddyddiol?' and 'Y dull goreu o gyfranu addysg i blant'.

The first of three volumes containing some one hundred and eighty-eight letters, 1856-1888, addressed to Henry Richard and dealing particularly with politics, the peace movement, education and other affairs in Wales.
The correspondents include Sheldon Amos (Sydney, New South Wales), Henry Austin Bruce, first baron Aberdare, Elihu Burritt (New Britain, Conn.), Josephine E. Butler, Sydney Charles [Buxton], earl Buxton, Estlin Carpenter, Joseph Chamberlain, F. W. Chesson, J. J. Colman (Norwich), Leonard Courtney, John Stewart [Gathorne-Hardy], second earl of Cranbrook, Henry W. Crosskey, R. W. Dale, Edward Henry [Stanley], fifteenth earl of Derby, Charles W. Dilke, L. L. Dillwyn, George Dixon, Henry T. Edwards (dean of Bangor), Lewis Edwards (Bala) and Thomas Charles Edwards (Aberystwyth).

The second of three volumes containing some one hundred and eighty-eight letters, 1856-1888, addressed to Henry Richard and dealing particularly with politics, the peace movement, education and other affairs in Wales.
The correspondents include Henry Fawcett, (Mrs) M. G. Fawcett, Dudley Field, Hugh Fielden, Lord [Edmond] Fitzmaurice, W. E. Forster, W. H. Fremantle, Joseph F. B. Frith, Thomas Gee, H. M. Milner Gibson, J. H. Gladstone, W. E. Gladstone, Granville George [Leveson-Gower], second earl Granville, John Griffith (Y Gohebydd), Lord Richard Grosvenor, first baron Stalbridge, George Hadfield, John Hampden (Croydon), Sir William Harcourt, H. D. Harper (Jesus College, Oxford), Thomas Harris, Arthur Hobhouse, Alfred Illingworth, Basil M. Jones, J. Viriamu Jones and Michael D. Jones.