Saint Louis Art Museum, Bequest of Morton D. May 838:1983
Courtesy Villa Grisebach, Berlin
Museum Pfalzgalerie Kaiserslautern. Foto: Gunther Balzer
Christie's Images Ltd / ARTOTHEK
New York, Museum of Modern Art (MoMA), Curt Valentin Bequest, 328.1955© 2018. Digital image, The Museum of Modern Art, New York / Scala, Florence