Research papers of Arthur Troughton, comprising manuscript and typescript drafts of his proposed book, 'The Grasses. Their Structure and Growth', with related research material, [c. 1948]-[1982].

Papers of Ffransis G. Payne, 1920-1990, including letters to (and copy letters from), 1924-1981, relating mainly to his study of Welsh folk history and in particular his research into the history of agriculture in Wales; letters to Ffransis Payne, 1938-1978, relating to his research into the history of the plough and agricultural implements; general correspondence, 1932-1989; and letters from Iorwerth Cyfeiliog Peate, 1927-1971. Also research notes and other miscellaneous material including articles, letters, photographs, illustrations, transcripts of poems, and printed items relating to the donor's study of early agriculture in Wales, Welsh folk culture, Radnorshire poets and their patrons, Welsh poetry, and pedigrees. There are also some papers of Mrs Helly Payne.

General correspondence files, chiefly financial in nature, with various companies, related bodies such as National Association of Agricultural Services, etc., 1955-1979, correspondence with Ministry of Agriculture and Fisheries, 1930-1957; Ministry of Agriculture, Fisheries and Food, 1957-1968; Agricultural Research Council, 1951-1979; National Institute for Agricultural Botany, 1954-1985; WPBS reports, 1919-1980; annual reports, 1944-196; papers of the Directors and heads of sections, 1919-1974; minutes, etc., relating to various seed production committees, 1947-1957; the papers of Gwilym Evans, 1928-1961; the Cahn Hill Improvement Station at Pwllpeiran, Cwmystwyth, 1933-1973; files of experiments, with details of experiments in progress, field record cards, slips and notebooks, agrotype experiment data, including results of research undertaken at Bicton, Cambridge, Newcastle, Hurley and Aberdeen, and at Welsh county trials, [1919]-1969.