Papers, [early 19 cent.]-1927, of Sir John Ballinger, which include articles, reviews, reports and addresses by Ballinger, some of which relate to libraries in Britain, including a report on the University College of North Wales, Bangor library and reports and other papers, 1903-1910, relating to the Library Association; articles, addresses and notes by Ballinger relating to literary matters and (mainly Welsh) historical events and figures; and papers and correspondence, 1903-1906, relating to the Bible in Wales.

Papers, 1913-1974, produced and acquired by the Department of Welsh History, University College of Wales, Aberystwyth, and University of Wales Aberystwyth, comprising a variety of studies and research materials relating to Welsh history, and including small groups of papers of Sir J. Goronwy Edwards (1891-1976) and Professor David Williams (1900-1978).

Papers, 1899-1964, of T. Jones Pierce, relating to his research on medieval Welsh history, comprising mainly lectures, correspondence and transcripts. Research papers and lecture notes of W. Garmon Jones, Jones Pierce's tutor and research supervisor at the University of Liverpool, are also included.