Chicago, Art Institute of Chicago, Joseph Winterbotham Collection, 1988.220© 2018. The Art Institute of Chicago / Art Resource, NY / Scala, Florence
Berlin / Köln, Archiv Mayen Beckmann. Foto: Fotostudio Bartsch, Berlin
Sprengel Museum Hannover / Michael Herling / Aline Gwose
Courtesy Galerie Thomas, München