Minute books, correspondence and papers, 1953-1992, relating to the Conservative Party in North Wales, including general political papers and circulars, 1971-1989; papers of the North Wales European Election, 1989; news sheets produced by the Brecon and Radnor Conservative Association, 1963-1972; papers relating to the training of constituency agents, 1970-1978; minutes and correspondence of the executive council of the Caernarvon Division of the Conservative and Unionist Association, 1953-1992; papers concerning the Pwllheli Conservative Club, the Association's Annual General Meetings, briefings and reports, 1982-1992; papers including minutes of the executive council and other committees; correspondence, circulars, memoranda, balance sheets of the Conway Constituency Conservative and Unionist Association, 1967-1982; minutes of the Llandudno Junction branch, 1951-1986; records of the Denbigh Constituency Conservative Association, 1974-1982; papers of the National Society of Conservative and Unionist Agents, both the National and Wales and Monmouthshire branches, 1970-1980; and minutes of the North Wales European Constituency Conservative Council, 1978-1989.

The series comprises correspondence and papers, 1946-1974, relating to Goronwy O. Roberts's work as Labour Member of Parliament for Caernarfonshire. They include letters from constituents asking for assistance and advice and drawing attention to problems and difficulties in the constituency, responses from government departments and ministries, letters concerning local events and activities, letters from organisations and societies within the county, and correspondence deriving from local government matters. The constituency correspondence is especially revealing in so far as it reflects local expectations from the Labour governments, 1945-1951, and later administrations.

The series comprises files of correspondence and papers, 1940-1974, concerning Caernarfonshire subjects or themes.

Records of the Welsh Liberal Party, 1966-1988, including Executive Committee and General Council minutes, 1967-1987; Annual General Meeting papers and correspondence, 1982-1987; correspondence and papers relating to local government reform and electoral reform, transport, economic policy and nationalisation, Welsh affairs, devolution, and Welsh Liberal Party structure and finance, 1963-1987; papers relating to annual conferences, 1968-1987; papers relating to parliamentary and other elections, 1969-1989; correspondence and papers relating to individual parliamentary constituencies, 1970-1980; Local Government and Parliamentary Boundary Commission submissions, 1981-1983; Standing Committee and Policy Directorate papers, 1975-1982; press releases, 1980-1988; party publications, 1975-1981; records of county Liberal Associations, 1973-1988; and records of Caernarfon Division Liberal Association, 1961-1975.

Three additional files comprising minutes of meetings of the Welsh Liberal Party, 1981-2 and 1987. This group remains uncatalogued.

Papers of William George, Criccieth, consisting of his personal and family correspondence, diaries and notes, 1881-1960, and papers relating to his publications and public life (including political, legal, religious and Welsh cultural material), 1883-1958, together with diaries, 1881-1915, of Richard Lloyd ('Uncle Lloyd'), and a considerable amount of correspondence and other papers relating to members of the George family, the Lloyd family and the Lloyd George family, 1766-1981. Of particular interest is a very substantial group of papers of David Lloyd George, including: correspondence with William George, mostly 1886-1918; diaries, 1878-1892; letters from prominent politicians, 1879-1913; other letters, including many to family members, 1883-1928; letters from his secretaries, 1906-1963; and working drafts and notes in preparation for his speeches.