- / ARTOTHEK
Courtesy Galerie Thomas, München
Christie's Images Limited © 2019. Christie's Images, London / Scala, Florence
Museum Folkwang Essen / ARTOTHEK
Mildred Lane Kemper Art Museum, Washington University in St. Louis. University purchase, Kende Sale Fund, 1946.
bpk / Los Angeles County Museum of Art / Art Resource, NY
Ann Arbor, University of Michigan Museum of Art
Saint Louis Art Museum, Bequest of Morton D. May 855:1983
Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich
Sprengel Museum Hannover, Kunstbesitz der Landeshauptstadt Hannover, Schenkung Volkswagenwerk GmbH, Wolfsburg (1956) / Ali