Papurau gwleidyddol Dafydd Elis Thomas, yn cynnwys adroddiadau a datganiadau i'r wasg, 1975-1991; areithiau ac erthyglau, 1980-1990; gohebiaeth gyffredinol a gwahoddiadau, 1974-1992; gohebiaeth, nodiadau ar drafodaethau a phapurau eraill yn ymwneud â gwaith Tŷ'r Cyffredin, 1974-1992, a Llyfrgell Tŷ'r Arglwyddi, 1980-1991; gohebiaeth â'r Swyddfa Gymreig, 1974-1990; papurau'n ymwneud â Phlaid Cymru, 1974-1992; papurau'n ymwneud â materion lleol, yn bennaf rhai Meirionnydd Nant Conwy a Gwynedd, 1972-1991, a materion rhyngwladol, 1971-1991; a phapurau'n ymwneud ag addysg yng Nghymru, yn cynnwys y Cwricwlwm Cenedlaethol ac addysg bellach, 1974-1991, amaethyddiaeth ac Undeb Amaethwyr Cymru, gan gynnwys lles anifeiliaid ac effaith trychineb Chernobyl ar ffermio defaid yng Nghymru, 1975-1991, diwydiant yng nghefn gwlad, Bwrdd Datblygu Cymru Wledig, ac effaith ail-gartrefi,1976-1991, papurau'r Ymddiriedolaeth Genedlaethol a'r celfyddydau, 1974-1991, datganoli, 1977-1992, cyfathrebu a'r cyfryngau, 1976-1992, cyfraith a threfn, 1975-1989, problemau alcohol a phroblemau cymdeithasol, 1975-1991, yr iaith Gymraeg, 1973-1992; diwydiant, 1974-1989, yr economi, 1972-1990, iechyd a nawdd cymdeithasol, 1971-1990, trafnidiaeth, 1975-1989, ac ynni niwclear, 1971-1991 = Political papers of Dafydd Elis Thomas, including reports and press releases, 1975-1991; speeches and articles, 1980-1990; general correspondence and invitations, 1974-1992; correspondence, notes on debates and other papers relating to the business of the House of Commons, 1974-1992, and to the House of Commons Library, 1980-1991; correspondence with the Welsh Office, 1974-1990; papers relating to Plaid Cymru, 1974-1992; papers relating to local matters, mostly Meirionnydd Nant Conwy and Gwynedd, 1972-1991, and international matters, 1971-1991; and papers concerning education in Wales, including National Curriculum and further eduaction, 1974-1991, agriculture and the Farmers' Union of Wales, including animal welfare and the effect of the Chernobyl disaster on sheep farming in Wales, 1975-1991, rural industry, Development Board for Rural Wales, and the effect of second homes, 1976-1991, National Trust and the arts papers, 1974-1991, devolution, 1977-1992, communications and the media, 1976-1992, law and order, 1975-1989, alcohol and social problems, 1975-1991, the Welsh language, 1973-1992, industry, 1974-1989, the economy, 1972-1990, health and social security, 1971-1990, transport, 1975-1989, and nuclear power, 1971-1991.

Papers and ephemera relating to the Peace Movement, 1976-[1990s]; the Labour Party, 1975-1996; Trade Union activities, [c. 1980s]-[1990s]; the Peace and Nuclear Disarmament movement, 1976-[1990s], including the Greenham Common Peace Camp, the 'Peace Marches' from Cardiff to Greenham Common, the camp at Brawdy Royal Air Force base, Pembrokeshire, and other women's peace camps, and the Campaign for Nuclear Disarmament (CND); Nuclear Energy and Green Movement, 1973-[1990s]; feminist issues, 1958-1990; issues including animal rights, Europe, the NHS, pensions, public transport, the Poll Tax, unemployment and the United Nations, [c. 1990s]; posters relating to the activities of the various groups and societies supported by them, [c. 1980s]-[1990s], regarding numerous issues, campaigns and events, including the peace movement, the environment, human rights and the 1989 `War on Want' Benefit Concert for Central America, and correspondence with MPs, 1982-1992.

General and parliamentary correspondence, 1961-1987; constituency correspondence, 1970-1987, files relating to constituency affairs, 1947-1987; files relating to the following: Welsh affairs, 1985-1987, including transport, 1959-1973; health service, 1960-1978; Welsh language and nationalism, 1966-1979; devolution, 1970-1979; Select Committee for Welsh Affairs, 1975-1985; the Labour Party, 1964-1987, mainly annual conferences and general elections; industrial affairs, 1958-1985, penal reform, 1961-1987, children, 1968-1987, abortion, 1969-1979, nuclear energy, 1977-1987, genetic engineering, [c. 1977] - 1985; and personal papers, mainly letters, [1930s]-1946, and articles, notes and diaries, [1930s]-[1980s]. A further consignment of papers were received. These remain uncatalogued.