1970. Document (Page 5/5). Ref. 'Dusseldorf in Edinburgh' (Strategy: Get Arts) exhibition, and 'Sound in Space' event at Edinburgh College of Art.
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)
1972. Letter (page 1/2) to Demarco from Dr Stephen Bann, ref. lecture on Ian Hamilton Finlay. Edinburgh Arts 1972.