General correspondence, 1914-1915, of David Lloyd George including letters from J. Ramsay MacDonald (1), C. F. G. Masterman (1), Margot Asquith (1) and Sir Edward Grey (1) and correspondence relating to the Swansea by-election and the proposed candidature of C. F. G. Masterman.

Papers of political interest, 1909-1995, including papers relating to local and general elections, in Swansea West, 1982-1983; Pontypridd, 1987; Pembroke, 1991-1992; Vale of Glamorgan, 1985-1993; papers relating to the SDP, 1983-1994, including correspondence, minutes, press releases; papers relating to the SDP/Liberal Alliance, 1987-1988; papers of the Alliance Committee for Wales, 1985-1987, including correspondence, minutes of meetings, drafts of speeches, memoranda; papers of the SDP Welsh Council, 1981-1988, including correspondence, minutes of meetings, newspaper cuttings; papers of the Welsh Regional Economic Policy Group, 1981-1982; papers of the Vale of Glamorgan SDP, including CVs of prospective candidates, 1982-1983; personal papers of Peter Sain Ley Berry, [c. 1981]-1988, including correspondence and diaries; printed material, 1977-1995, including SDP policy documents and manifestos; records of the Lloyd George Society, including correspondence, 1975-1993, and printed material, 1909-1991; papers of the Welsh Centre for International Affairs, 1986-1991; and miscellaneous material, 1968-1984. The 2003 Donation, as yet uncatalogued, comprises further papers, c. 1982-2000, relating to the SDP, including papers relating to the Hillhead bye election and miscellaneous Wales in Europe papers.

Llyfr cyfrifon Cangen Plaid Cymru, Abertawe, 1960-1964, a llyfrau nodiadau yn ymwneud â threfniadau etholiadau lleol yn ardal Abertawe, 1967-1972.

Anerchiadau etholiadol J. Gwyn Griffiths pan fu’n ymgeisydd ar ran Plaid Cymru yn etholiadau cyffredinol 1959 a 1964 (Etholaeth Gŵyr), etholiad trefol Abertawe, 1969, ac etholiad dinesig Abertawe, 1970, ynghyd â thorion o'r wasg.

Llythyrau at y wasg a ysgrifennwyd ganddo fel Swyddog y Wasg, Plaid Cymru, a thorion (Chwefror 1974) o'r South Wales Evening Post yn bennaf, 1973-1974, yn ymwneud ag etholaeth Gorllewin Abertawe yn y cyfnod yn arwain at Etholiad Cyffredinol 1974.