Exhibition catalogue published in conjunction with show held at the Ministerium für Bundesangelegenheiten des Landes Nordrhein-Westfalen, November 27 - December 31, 1987. Traveled to Akademie der Künste der Deutschen Demokratischen Republik im Marstall, Berlin, January 15 - March 6, 1988. Texts by Klaus Gallwitz, Franz Joseph van der Grinten, Hans van der Grinten, Werner Hofmann, and Werner Schade. Includes bibliography and exhibition checklist. Texts in German.