Galerie St. Johann, Saarbrücken, Germany

June 4 – July 13, 1973

Kunstverein Bochum, Bochum, Germany

January 1, 1973

Galerie Renée Ziegler, Geneva, Switzerland

January 1, 1973

National Museum of Art, Tokyo, Japan; National Museum of Art, Kyoto, Japan

German Contemporary Art January 1, 1971

Galerie Defet, Nürnberg, Germany

January 1, 1971

Kunstverein Gegenverkehr, Aachen, Germany

January 1, 1971

Galerie Liemersdorf, Essen, Germany

January 1, 1971

Galerie Müller, Stuttgart, Germany

January 1, 1971

Museum Folkwang, Essen, Germany

January 1, 1971