1981. John Martin with 'Beuys, Rosebery, Fuller' edition of prints, at Beuys's studio, Dusseldorf, Germany.
1973. Letter (page 1/3) from Ian Hamilton Finlay to Demarco, ref. Finlay/ Demarco collaboration 'A Calm in a Tea-cup' (Wild Hawthorn Press, 1973)
1976. Catalogue. Page 9/29. RDG 10th Anniversary Exhibition. Ten-year record of the gallery's activities 1966-1976.