Papurau Dafydd Guto Ifan, 1931-1995, yn cynnwys torion o'r wasg, erthyglau,nodiadau a ffotograffau yn ymwneud ag awduron llyfrau Cymraeg i blant a llên gwerin. = Papers of Dafydd Guto Ifan, 1931-1995, comprising press cuttings, articles, notes and photographs relating to Welsh children's authors and folk lore.

Deeds, mostly relating to the estate of the Burchinshaw family, Denbighshire, 1668-1750, and the Tremadog, Caernarfonshire, estate of the Roche family, 1895-1900.