1987. R-L: Caroline Tisdall and Paul van Vlissingen at the RDG exhibition of Tisdall's 'Bits & Pieces' collection of works by Joseph Beuys.
1975. Ian Hamilton Finlay, David Brown, Panza di Biumo, in the gallery at Stonypath. Edinburgh Arts 1975.
1970. Letter (page 1/2) from Demarco to Willi Fleischer, Cultural Officer of the City of Dusseldorf. Ref. Strategy: Get Arts.
1973. Letter (page 2/3) from Ian Hamilton Finlay to Demarco, ref. Finlay/ Demarco collaboration 'A Calm in a Tea-cup' (Wild Hawthorn Press, 1973)
1970. Letter (page 2/7) from Robert Filliou to Georg Jappe. Ref. The Vocational Game. Strategy: Get Arts.