1970. Announcement Card (recto). Keith Critchlow and Alan Hacker's 'Sound in Space'. Presented by the RDG at Edinburgh College of Art.
1979. Exhibition Catalogue (page 3/6). Jack Tworkov, Paintings 1950-1978. Presented by the RDG in association with Third Eye Centre, Glasgow, and Ulster Museum, Belfast.
1974. Letter (page 1/2) to Demarco from Caroline Tisdall, ref. Black and White Oil Conference. Edinburgh Arts 1974.