1977. Beuys blackboard. One Hundred Days of the Free International University. Documenta Six. Kassel, Germany.
1973. Letter from Arnold Herstand to Richard Demarco. Ref. Twelve Hour Lecture blackboards by Joseph Beuys.
1984. The White Box. Performance by Steve Garrick and Alex Landrum. Demarcation '84. Edinburgh College of Art.
1971. Paul Neagu. Drawing in basement of the RDG, Melville Crescent, Edinburgh, during the RDG's Romanian Art Today exhibition.