Papers of Edgar Leyshon Chappell, 1772-1951, including housing and public health records, 1901-1930; records relating to the South Wales Regional Survey Committee, 1920-1921; Industrial Unrest Commission records, 1904-1917; Agricultural Wages Board enquiry and research records, [c. 1918]-1940; records relating to local government and post-war reconstruction, 1891-1945; records of Melingriffith Tinplate Works, 1772-1948; papers relating to Daniel Lleufer Thomas, 1919-1941; scrapbooks, 1910-1944; and newspaper cuttings, 1896-1923.

Papers of J. Glyn Picton, 1949-1991, mainly papers concerned with his researches into General Sir Thomas Picton (1758-1815) and the Picton family, 1951-1991, including correspondence, 1949-1977; notes, 1951-1975; copies and transcripts of probate record and Pembrokeshire plea rolls; photographs and news cuttings, 1975-1984; and copies of printed sources; with also records, articles and lectures reflecting J. Glyn Picton's public service in the fields of national health and industrial relations, 1951-1977.