Limited edition exhibition catalogue published in conjunction with shows curated by Paul Maenz during 1971. Artists include Hans Haacke, Joseph Kosuth, Peter Roehr, Carel Visser, Robert Barry, Martin Maloney, Ulrich Rückriem, Salvo, Victor Burgin, Roelof Louw, W. Knoebel, Peter Roehr, Mark Boyle, and Giulio Paolini. Features exhibition dates, brief biography, and photographs for each artist listed.