First and second autograph drafts, 1940-1941, both extensively revised, of an uncompleted novel by John Cowper Powys entitled 'Edeyrnion'. The work, set in Corwen and containing autobiographical elements, was abandoned in 1941.

Recollections of agriculture in the vale of Edeyrnion, 1857-1870, written in 1928-1929 by Gomer Roberts, then of Bryn Llyfin, Llanfair, Ruthin.

Papurau, 1878-1915, John Roberts yn ymwneud â hanes ardal Llandrillo, yn cynnwys cofnod o ddigwyddiadau yn Llandrillo, 1878-1899; llyfrau nodiadau ar hanes Methodistiaeth Galfinaidd yn Llandrillo, [c. 1899]; traethodau, [1890au]-1909; a nodiadau achyddol ac arall yn ymwneud â chwmwd Edeirnion ac ardal Llandrillo, [1878]-[1915]. = Papers, 1878-1915, of John Roberts relating to the history of the Llandrillo district, including a record of events in Llandrillo, 1878-1899; notebooks on the history of Calvinist Methodism in Llandrillo, [c. 1899]; essays, [1890s]-1909; and genealogical and other notes relating to the commote of Edeirnion and the Llandrillo area, [1878]-[1915].