1980. AS IS performance by Alastair MacLennan at Art and Research Exchange, Belfast. Edinburgh Arts 1980.
1973. Letter (page 1/2) from Demarco to Arnold Herstand, ref. Twelve Hour Lecture blackboards by Joseph Beuys.
1982. Postcard (recto). Beuys/ Rosebery/ Fuller, editioned prints by Joseph Beuys, available for purchase through Ronald Feldman Fine Arts, New York.