1986. Letter from Eva Beuys to Demarco (Ref. proposed publication of Demarco interview with Beuys in 1982).
1976. Catalogue. Page 20/29. RDG 10th Anniversary Exhibition. Ten-year record of the gallery's activities 1966-1976.
1977. Letter (page 2/3) to Demarco from Robert O'Driscoll. Ref. Edinburgh Arts 1977, and Canada and the Celtic Consciousness conference (1978).