Over eighty letters and cards, 1934-1968, to John Petts from his first wife, the artist and writer Brenda Chamberlain (1912-71), together with related correspondence, 1941-1988, concerning their relationship, including reminiscences of her, 1988, by their friend Elizabeth Jones. Also included are sketches, trial pulls of prints, and a proof copy of a booklet of hand-coloured prints all by Brenda Chamberlain, mainly produced whilst running the Caseg Press, Llanllechid, in partnership with John Petts.