Copy of a draft bill laid before the House of Commons on 10 December 1996 which would have established a Welsh Senedd which was proposed by Labour, Conservative, Liberal Democrat and Plaid Cymru MPs along with an unrelated copy of Hansard.

Various material relating to the Yes for Wales campaign in the 1997 devolution referendum, planning for the first Assembly elections, passing the Act in the UK Parliament and internal Plaid Cymru arrangements for the campaign.

Files relating to the referendum on devolution to Wales in 1997.

Papers from a Nuffield Trust event on the role of the state in healthcare in 2004, a copy of a speech by Ron Davies on devolution, a letter from Ann Williams following the death of her husband Phil Williams and a copy of Ieuan Wyn Jones's Oath of Allegiance after the 2003 elections to the National Assembly for Wales.

Papers including correspondence between the Welsh and UK governments about economic development, establishing the Yes Campaign for the 2011 referendum on legislative powers for the Assembly, arrangements for the All Wales Convention and correspondence with the Secretary of State for Wales about the referendum.

Papers of Cliff Prothero, including correspondence and papers relating to the Labour Party and Wales, and to the devolution debate, 1947-1989; certificates of qualifications, 1917-1968; photograph album, 1926-1964; scrapbook of press cuttings, 1934-1989; miscellaneous publications relating to the Labour Party, 1941-1964; and typescripts, correspondence and papers relating to Cliff Prothero's autobiography, Recount, 1981-1982. There are no papers relating to his public activities.

Papers of the Aberystwyth "No Assembly" Campaign, 1975-1981, including correspondence, 1975-1981; pamphlets, leaflets, circular letters, stickers, 1976-1979; financial records, 1978-1979; press releases, 1978-1979 and press cuttings, 1975-1979.

Constitution and rules of the Hydro Group and minutes of meetings, 1983-1986; correspondence, 1983-1986; copies of Tonnau/Waves, 1984-1986; study reports and questionnaires, 1983-1984.

Cofnodion Plaid Cymru, 1915-1999, yn cynnwys cofnodion, agenda and gohebiaeth y pwyllgor gwaith a phwyllgorau eraill, 1925-1997; gohebiaeth gyffredinol, 1925-1998, gyda nifer o aelodau a swyddogion blaenllaw y blaid; cofnodion, gohebiaeth a phapurau eraill y gwahanol bwyllgorau rhanbarthol, 1925-1997, a changhennau,1930-1992; cofnodion a dogfennaeth y Cyngor Cenedlaethol, 1967-1997; cofnodion ariannol, yn cynnwys rhai papur newydd misol y blaid Y Ddraig Goch a Welsh Nation a Chronfa Gŵyl Ddewi, 1927-1996; rhaglenni a threfniadau ar gyfer cynadleddau ac Ysgolion Haf, 1933-1998; cofnodion aelodaeth, 1930-1996; papurau y Grŵp Ymchwil, [c.1960]-1995; papurau, yn cynnwys areithiau ac effemera, yn ymwneud ag etholiadau, 1929-1999; papurau yn ymwneud ag Adran y Menywod, 1924-1996, a'r Mudiad Ieuenctid, 1964-1998; papurau yn ymwneud â refferendwm datganoli 1979,1969-1983, a refferendwm 1997, a Chynulliad Cymru,1992-1998; papurau yn ymwneud â Y Ddraig Goch, Welsh Nation a chyhoeddiadau eraill, 1932-1996; deunydd printiedig gan Blaid Cymru ac eraill yn cynnwys llyfrau, cyfnodolion a phamffledi,1913-1996; torion o'r wasg, 1924-1996; cylchlythyron, 1938-1992; papurau yn ymwneud â'r Blaid Seneddol,1980-1996; papurau unigolion ac rhai ar wahanol bynciau amrywiol, 1926-1998 = Records of Plaid Cymru, 1915-1999, including minutes, agendas and correspondence of the executive and other committees, 1925-1997; general correspondence, 1925-1998, with many prominent party members and officials; minutes, correspondence and other papers of the various regional committees, 1925-1997, and branches, 1930-1992; minutes and records of the National Council, 1967-1997; financial records, including those of the party's monthly newspaper Y Ddraig Goch and Welsh Nation and Cronfa Gwyl Dewi, 1927-1996; arrangements for and programmes of conferences and Summer Schools, 1933-1998; membership records, 1930-1996; papers of the Grŵp Ymchwil (research group), [c.1960]-1995; papers, including speeches and ephemera, relating to elections, 1929-1999; papers relating to the Adran Menywod (Women's Section), 1934-1996, and the Mudiad Ieuenctid (Youth Movement), 1964-1998; papers relating to the 1979 devolution referendum, 1969-1983, and the 1997 referendum and Welsh Assembly, 1992-1998; papers relating to Y Ddraig Goch, Welsh Nation and other publications, 1932-1996; printed matter by Plaid Cymru and others including books, periodicals and pamphlets, 1913-1996; press cuttings, 1924-1996; circulars, 1938-1992; papers relating to the Parliamentary Party, 1980-1996; papers of individuals and to various miscellaneous topics, 1926-1998.

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.