Papers of Mrs L. Eirlys Williams, 1905-1978, relating to her work for the Baptist Union of Wales and other Baptist causes, including letters to the Rev. and Mrs E. J. Williams [L. Eirlys Williams], 1949-1964; letters from various correspondents addressed to Mrs M. Christy Davies, secretary of the Welsh Baptist Ministers' and Missionaries' Wives Prayer Union, 1950-1953; Baptist Union of Great Britain and Ireland papers and printed material, 1930-1978; Baptist Union of Wales papers and printed material, including copies of The Inset, 1941-1978; and Baptist Missionary Society papers and printed material, 1905-1974, including English and Welsh copies of Prayer Partners, 1933-1974.

Stray papers of the Waddingham family, some of which relate to the Hafod estate, Cardiganshire, 1794-1910, including transcriptions, 1794, of notes on lead mines by Lewis Morris; cost and contract books of Bwlchyranos and South Hafod Lead Mines, 1859-1868; printed Cardiganshire election registers, 1862-1865; miscellaneous press cuttings collected by T. J. Waddingham; estate administration records, including agreements to sell timber for shipbuilding from the Hafod Estate by William Chambers, 1857 and papers relating to water supply and railways; return of copies of a crown land survey adjacent to Hafod, 1845; and various printed pamphlets.