Arman, Jean Arp, Karl Gerstner, Man Ray, Arnulf Rainer, Diter Rot, Soto, Daniel Spoerri, Niki de Saint Phalle, Paul Talman, Jean Tinguely, and Jacques Villeglé
The Fine Arts Gallery, University of British Columbia, Vancouver, 1969 ⁄ 3 color folders with folding posters + 25 loose sheets in 3 panel cardboard folder
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Schwarze Quadrate / Black Squares. Vorgelegt von presented by Dietrich Helms.
Dietrich Helms
Edition Copie, Hannover, 1979 ⁄ softcover with white belly band ⁄ edition 391