1978. Andre Thomkins, Gunther Uecker and Joseph Beuys. Kunsthalle Dusseldorf.

9 May 1978. Andre Thomkins (second left), Gunther Uecker (fourth left) and Joseph Beuys (centre) at the Kunsthalle Dusseldorf for Richard Demarco's lecture The Artist as Explorer. Demarco lectured in Switzerland, Germany and Holland.