2020 Christie's Images Limited
Courtesy Thomas Ammann Fine Art AG
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Mildred Lane Kemper Art Museum, Washington University in St. Louis. University purchase, Kende Sale Fund, 1946.
Courtesy Galerie Thomas, München
Courtesy Metropolitan Museum, New York (Sabine Rewald)
Kunsthalle Bremen – Der Kunstverein in Bremen. Foto: Lars Lohrisch
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Kunstpalast - ARTOTHEK
Boston, Museum of Fine Arts
Houston, Sarah Campbell Blaffer Foundation
Sprengel Museum Hannover, Kunstbesitz der Landeshauptstadt Hannover, Schenkung Volkswagenwerk GmbH, Wolfsburg (1956) / Ali