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.