Papers of, or collected by, George Eyre Evans, 1669-1939, including his diaries and journals, autobiographical data and correspondence, 1872-1939; notebooks and scrapbooks on archaeological and historical matters in Wales, relating particularly to Carmarthenshire and Cardiganshire, 1900-1939; copies of his published works with insertions, [c. 1887]-[c. 1908]; diaries, memorandum books and autograph letters of members of the Powell family of Colyton, Devon, 1788-1921; diaries, correspondence and other papers of the Rev. David Lewis Evans, 1846-1902; letters and notes relating to Welsh Unitarianism, 1806-1905; letters by and about ministers, 1775-1904; miscellaneous manuscripts of religious and antiquarian interest, some relating to Wales and to Colyton; and a volume of proceedings of the General Assembly of General Baptist Churches, 1730-1787.

An album kept by Catherine Powell Evans, sister of George Eyre Evans, containing press cuttings, portraits, poems and miscellaneous extracts, some of which are of Unitarian interest.