Papers of Harri Webb, [c. 1919]-1995, including poetry, 1942-1989; reviews and reader's reports, 1974-1986; correspondence with publishers, broadcasters and editors relating to Webb's work, 1949-1995; correspondence from literary and artistic figures, [1940s]-1983; political correspondence, 1964-1974; political press cuttings, 1952-1981; papers relating to Plaid Cymru, 1961-1978, and Scottish politics, 1967-1969; and personal papers, [c. 1919]-1984.

A collection of Harri Webb's diaries. This group remains uncatalogued.

Literary papers of Professor Gwyn Williams including typescript texts of This Way to Lethe with notes and correspondence, [c. 1962]; notes for The Avocet, [c. 1970]; material relating to his poetry collections including manuscript and typescript drafts, [1970]-[1980]; typescript and manuscript texts for Troelus a Chresyd, 1954-[1976]; papers relating to Person and Persona, [c. 1981], An Introduction to Welsh Literature, [c. 1978], and ABC of (D.) G. W., [c. 1981]; material relating to translations of Welsh poetry, [1950]-[1976]; material relating to The Land Remembers book and series, [c. 1977]; radio scripts, 1954; texts, drafts, notes, correspondence, maps and photographs relating to his travel writing, [1963]-[1975]; and correspondence with publishers and the BBC, 1951-1978.

Additional literary papers including manuscript works and notes, typescript poems, plays, articles and reviews were received in July 2018; a list and bibliography compiled by the family are inserted in the first box.

Papers of and acquired by R. Bryn Williams, mainly relating to the Welsh settlement in Patagonia, including a diary of Joseph Seth Jones, one of the first wave of emigrants on the Mimosa to Patagonia, 1865, and correspondence, 1865-1868; correspondence of his brother, Robert Charles Jones, 1867-1877; copy records of the Welsh courts in Y Wladfa, 1872-1881; letters and minute books relating to Vrondeg Baptist Chapel, 1875-1887, Gaiman, 1877-1891, Eglwys Llanddewi, 1891, Eglwys Bryn Gwyn and Cyfarfod Misol Y Wladfa (Calvinistic Methodists), 1881-1955; papers relating to the Centenary Celebrations of the Welsh settlement in Patagonia, 1952-1962; letters from the founders of the Welsh colony, 1866, and from others who had experienced life there; letters to R. Bryn Williams from Patagonia and from Wales relating to Patagonia, [c. 1941-1961]; research notes and manuscripts of books and radio plays by R. Bryn Williams, 1942-1962; miscellaneous records relating to Wales and elsewhere collected by Williams, 1865-1962; papers relating to John S. Williams, 1901-1962; papers and press cuttings on the history, culture and industry of Patagonia, 1869-1962; and typescripts of published and unpublished works, lectures, scripts, etc.

Papers relating to the work and life of Robert Morgan, 1948-1992, including drafts of poetry and prose, 1967-1992; correspondence, 1963-1992; personal papers, 1947-1970; notebooks, [c. 1968]-1989; exhibition catalogues, 1966-1992; and publishers' contracts and financial papers, 1976-1985.