Papers of Thomas James Jenkin, 1904-1965, including student lecture notes, 1907-1914; Welsh Plant Breeding Station records, 1922-1957; papers relating to Sir R. George Stapledon, 1919-1961; lectures, [c. 1915]-1958; correspondence, 1916-1965; records relating to Dunns Farm Seeds Ltd, 1950-1965; papers relating to Agricultural Societies, including the Welsh Black Cattle Society, 1916-1965, the National Institute of Agricultural Botany, 1954-1965, and the British Grassland Society, 1949-1964; family and personal papers, 1907-1972; diaries, 1907-1918, 1927-1965; financial papers, 1911-1965; press cuttings, 1929-1961; family and local history research notes and essays; lectures and addresses, 1917-1962; private papers of Kate Laura Jenkin, 1927-1960.