1975. Exhibition Catalogue. Page 5/9. To Callanish from Hagar Qim. Edinburgh Arts 1975 exhibition. Richard England.
1969. Exhibition Catalogue. Page 5/5. Scottish Young Contemporaries exhibition, presented by the RDG.
1970. Letter (page 3/3) from Demarco to Dr Brigitte Lohmeyer, Cultural Officer of the German Embassy, London. Ref. Strategy: Get Arts.