The file is composed of correspondence and papers concerning the organisation of a seminar on the theme 'Labour's Answer to Nationalism' to be held at Coleg Harlech on 21 November 1987.

The file is composed of electoral material and leaflets published by Plaid Cymru mainly during various general election campaigns between 1970 and 1992. Among them is a typescript copy of 'An Economic Plan for Wales' published by the party during 1970, and copies of 'Socialism and Nationalism in Wales' by Neil Evans, and 'Defeating Welsh Nationalism', November 1987, by Jon Vaughan Jones.

Nodiadau ymchwil, [c. 1970]-[c. 1985], yn llaw Gwynfor Evans, ar hanes y mudiad cenedlaethol yng Nghymru./Research notes, [c. 1970]-[c. 1985], written by Gwynfor Evans, on the history of the nationalist movement in Wales.

The file contains correspondence and press cuttings, 1989-1990, concerning the fire-bomb campaign of Meibion Glyndŵr and the attitude adopted by the Labour Party towards it.

Ninety-four letters, 1919-1984, in Welsh and English, to Saunders Lewis from various correspondents, together with a few draft letters from Saunders Lewis and four letters to Margaret Lewis, written during her husband's imprisonment in 1937. Subjects discussed include Welsh nationalism, the award of DLitt honoris causa to Saunders Lewis, the Welsh Burial Grounds issue, 1928, and literary topics; enclosures include a copy of a draft constitution and articles of agreement, 1934, relating to self-government for Wales (ff. 161-95). Among the main correspondents are Edward Glyn Jones (13) 1919-28, Robert Williams Parry (14) 1927-44, John Arthur Price (5) 1928, E. Prosser Rhys (3) 1927-9, D. J. Williams, Fishguard (7) 1948-67, and Griffith John Williams (3) 1935-56.

Political papers of Jonathan Edwards, Plaid Cymru Member of Parliament for Carmarthen East and Dinefwr. The papers comprise correspondence, speeches, campaign material, diaries, papers on policy and notes. Tops include the UK leaving the European Union (Brexit), devolution, agriculture, banking, assisted dying, transport and regulation of the press..

Llungopïau a theipysgrifau o erthyglau, 1997-1998, a gyhoeddwyd mewn cylchgronau a llyfrau yn ymwneud â themau gwleidyddol, yn bennaf cenedlaetholdeb./Photocopies and typescripts of articles, 1997-1998, published in books and journals and on political themes, mainly nationalism.

Twenty six letters, 1922-1937, from D. J. Williams, Fishguard, to Flora Forster. They relate mainly to their personal relationship, but also contain references to his imprisonment, 1937 (ff. 48-9), George M. Ll. Davies (ff. 29 verso-30, 41), the 1922 parliamentary election (ff. 1-3), Saunders Lewis (f. 14 verso), and Welsh nationalism (ff. 45-8).

Seven notebooks containing notes made during, or immediately after, interviews conducted by the donor with Welsh politicians, public figures and activists during the period 1968-70, as research for his D.Phil thesis at Oxford University on Welsh nationalism 1945-70, later published as: The Welsh question: nationalism in Welsh politics, 1945-1970 (Cardiff: University of Wales Press, 1975). The names of those interviewed are listed at the back of The Welsh Question.