Notebooks, 1920-1923, copy of thesis entitled 'Daearyddiaeth Hanesyddol ac Economig Cymru'; drafts of published works, including Saints, seaways and settlements in the Celtic lands (1969), Dewi Sant. Nawdd Sant Cymru / Saint David. Patron Saint of Wales (1983) and 'Distribution of the Crown Livings in England and Wales . . . 1539' (?unpublished); lecture notes when he was Gregynog Professor of Geography and Anthropology at UCW, Aberystwyth, 1947-1968; papers relating to United Theological College, 1976-1983; papers relating to the University of Wales, Aberystwyth, 1978-1983; correspondence addressed to him, 1925-1982; maps, diagrams and posters prepared by him [20th century]; and miscellaneous papers, 1924-1981.

Papers of William Humphrey Watkins, 1912-1968, comprising 'English literature of travel from 1350-1750' (unpublished M.A. thesis, University of Wales), 1919; album containing cuttings, photographs and illustrations, mainly relating to natural history in Radnorshire, [1912]-1914; copies of W. J. H. Watkins and H. S. L. Watkins, 'How to Look at Geographical Pictures', First Series, 6th edn (1966) and Second Series, 4th-6th edn (1964-1967), with related photographs, notes, correspondence and other papers, [1960s]; notes on education in Llanfihangel Rhydithion, Radnorshire, 1848-1920, by William Watkins, [1930s]; and correspondence, 1958-1963.