Manuscripts collected by, and papers of, the Rev. T. Llechid Jones, including personal correspondence, 1883-1943; miscellaneous correspondence, 1826-1907; diaries, 1888-1935; addresses, 1911-1937; miscellaneous notes, 1888-1941; antiquarian notes, 1700-1943, mainly relating to parishes in North Wales; press cuttings, 1890-1934; pedigrees, genealogical material and correspondence of H. R. Hughes, 1867-1920; deeds and documents relating to Llysfaen, Caernarfonshire, and elswhere, 1597-1880; and printed books, with manuscript notes, 1678-1937.