Order books, 1865-1879; account books (listing revenue and expenditure, rentals and lime sales), 1850-1878; and printed material relating to brewing, 1867-1873.

Papers of G. Ivor Thomas, 1838-1994, including annual reports of several parish churches in Cardiganshire, 1969-1983; papers relating to Ysgol Myfennydd, Llanrhystud, Dyfed, 1984-1985; account books, 1838-1878, including a cereal trading log book of Felinfor Brewery [later Aberclydan], Llan-non, 1838-1840, and account books, 1845-78, concerning the shipping activities of the Owens family of Hope, Llan-non; records relating to the schooner `Eagle Eyed' of New Quay, 1845-1917; letters to Thomas, 1969-1994; printed and typescript items, 1951-1989; press cuttings, 1977-1992; research notes and drafts of articles and lectures; and miscellaneous photographs, [1900].