Retrospective catalogue produced in conjunction with exhibition held May 31 - July 13, 1980. Essays by Alfons Biermann, Günter Aust, Willem Sandberg, Rolf Jährling, Rolf Wedewer, and Georg Schwarzbauer. Artists include Alfred L. Copley, Pierre Alechinsky, Hans-Peter Alvermann, Gerlinde Beck, Joseph Beuys, Erich Boedecker, Peter Brünig, Alexander Calder, Rolf Cavael, Avinash Chandra, Corneille, Karl Fred Dahmen, Jun Doashi, Duncan, Claire Falkenstein, Konrad Fischer-Lueg, Johannes Geccelli, Otto Greis, Georg van Haardt, Gerhard Hoehme, Hsiao-Chin, Friedensreich Hundertwasser, Klaus Jürgen-Fischer, Horst Egon Kalinowski, Ida Karskaya, John Franklin Koenig, Heinz Kreutz, Norbert Kricke, Wilfredo Lam, Juan Langlois, André Lanskoy, René Laubiés, Jean-Jaques Lebel, E. R. Nele, Oyan Wen-Yuen, Nam June Paik, Adriano Parisot, Hans Plaschek, Sigmar Polke, Carl Frederik Reuterswaerd, Gerhard Richter, Franz roh, Joop Sanders, Bernard Schultze, Emil Schumacher, Sarah Schumann, Jaroslav Serpan, Anna Staritsky, Shinkichi Tajiri, Ferdi Tajiri-Jansen, Heinz Trökes, Tsai Hsia-Ling, Raoul Ubac, Claude Viseux, Wolf Vostell, Friedrich Werthmann, Wilhelm Wessel, and Wols. With detailed chronology of exhibitions. Text in German.