Personal and professional papers of Dr William Thomas, 1911-1981, including a diary of his time as a prisoner of war in Germany, 1914-1915; letters relating to his contributions on radio and television, 1916-1974; papers relating to his blind son Ian, 1924-1964; papers relating to his son William, 1937-1944; valuations of stock and farm accounts, 1952-1973; and testimonials, 1911-1922, and papers of his sister-in-law Magdalen Morgan, [1920]-1970, including lecture notes and scripts of plays in which she performed.

Miscellaneous papers, [1867]-[1896], 1916, of John Morgan, a Cardiff solicitor.
These include three Welsh poems, 'Bywyd Iesu yn fywyd yn fy mywyd i' by 'I.G.D.', [19 cent, second ½], 'Y Bwthyn yn Nghanol y Wlad', [19 cent, second ½], and a press cutting of a poem by Islwyn on the birth of John Morgan's son William Parry [Morgan], [?1875]; and two issues of The Rennbahn Church Times, a Prisoner of War camp magazine, 1916.