Material relating to the Opies' publications, such as notes and drafts, manuscripts and typescripts, illustrations and paste-ups, corrections, proof copies, and correspondence relating to the book planning and production process, mainly for the books the Opies worked on jointly before Peter Opie's death in 1982. Also includes papers relating to book proposals and publishing projects not realised, and to Opie articles, lectures, exhibitions and broadcasts, as well as book reviews, and biographical pieces and interviews with the Opies.