Papers, 1844-1941, of the Williams family of Acre House, Acrefair, mainly comprising letters, including family correspondence and letters received from relatives in Glamorgan, from the Pugh family, and from relatives in the USA, [late 19th cent.]-[early 20th cent.]; letters to the Rev. Ebenezer John Williams, mostly relating to his duties as minister and the chapel and water works in Llanwddyn, 1882-1889; and letters to John Williams, [late 19th cent.], mostly relating to the iron industry. The archive also includes diaries of John Williams, 1844-1897; notebooks, accounts and other documents, 1856-1893, relating to the ironworks in Ruabon and South Wales; diaries and notebooks of the Rev. Ebenezer John Williams, 1869-1935 (including chapel committee notes, accounts, Sunday School registers, and sermon notes); diaries and notebooks of Rev. John Pugh, 1849-1890, (including one containing his autobiography); papers relating to Liberal Party election campaigns in Montgomeryshire and Denbighshire, [late 19th cent.]; deeds, 1842-1921, mostly relating to property in Dowlais; papers relating to schools, [late 19th cent.]-[early 20th cent.], including school notebooks, prospectuses of schools including Holt Academy, and papers relating to the founding of British schools in the Cefn Mawr district and elsewhere.

Papurau Anthropos, 1869-1944, yn cynnwys gohebiaeth, 1869-1944, a llythyrau o gydymdeimlad at ei weddw, 1944; papurau personol eraill, 1878-1944, yn cynnwys dyddiaduron, llyfrau nodiadau ar bynciau llenyddol a diwinyddol; torion o'r wasg, 1880-1937; papurau llenyddol yn cynnwys cerddi gan Anthropos, 1876-1939, anerchiadau, erthyglau, traethodau a chyfansoddiadau rhyddiaith eraill, 1898-1922; barddoniaeth a rhyddiaith gan awduron eraill (rhai llawysgrifau gwreiddiol), yn enwedig Llew Llwyfo, 1877-1939. = Papers of Anthropos, 1869-1944, including correspondence, 1869-1944, and letters of condolence to his widow, 1944; other personal papers, 1878-1944, including diaries, notebooks on literary and theological matters; newspaper cuttings, 1880-1937; literary papers including poems by Anthropos, 1876-1939, addresses, articles, essays and other prose compositions, 1898-1922; poetry and prose by other writers (some original manuscripts), in particular Llew Llwyfo, 1877-1939.