Exhibition catalogue published in conjunction with show held organized and held at Mildred Lane Kemper Art Museum, Washington University, February 7 - April 19, 2020. Traveled to Bechtler Museum of Modern Art, Charlotte, North Carolina, May 22 - September 18, 2020. Curated by Meredith Malone. Introduction by Meredith Malone with additional essays by Ágnes Berecz, Magdalena Holzhey and Meredith Malone. Artists include Yaacov Agam, Josef Albers, Bo Ek, Pol Bury, Marcel Duchamp, Karl Gerstner, Heinz Mack, Frank Malina, Enzo Mari, Bruno Munari, Man Ray, Dieter Roth, Jesús Raphael Soto, Jean Tinguely, Victor Vasarely, Arman, Hans Arp, Arnulf Rainer, Niki de Saint Phalle, Daniel Spoerri, Paul Talman, Jacques Mahé de la Villeglé, Enrico Baj, Davide Boriani, George Brecht, Christo, Gabriele De Vecchi, Robert Filliou, Maurice Henry, Julio Le Parc, Roy Lichtenstein, Christian Megert, François Morellet, André Thomkins, and Emmett Williams. Includes an index, checklist of the exhibition, supplemental illustrations and contributor biographies.