akg-images 3929242
New York, Neue Galerie
Düren, Leopold Hoesch Museum. Foto: Aachen, Peter Hinschläger
Courtesy Galerie Thomas, München
Saint Louis Art Museum, Bequest of Morton D. May 851:1983
Kunsthalle Mannheim, Foto: Cem Yücetas
Museum Folkwang Essen / ARTOTHEK
akg-images 212824
akg-images 583036
akg-images 255323
Ann Arbor, University of Michigan Museum of Art
Saint Louis Art Museum, Bequest of Morton D. May 867:1983