1973. Richard Demarco and Allan Kaprow. California Institute of the Arts. USA.

18 February 1973. L-R: Richard Demarco, Allan Kaprow, May von Neilson, at California Institute of the Arts, Los Angeles, USA, during Demarco's lecture tour of Canada and the USA (15 January - 22 February 1973). Preparation for Edinburgh Arts 1973.