Saint Louis Art Museum, Bequest of Morton D. May 851:1983
Courtesy Beck & Eggeling, Düsseldorf
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bpk / Los Angeles County Museum of Art / Art Resource, NY
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Sprengel Museum Hannover, Kunstbesitz der Landeshauptstadt Hannover, Schenkung Volkswagenwerk GmbH, Wolfsburg (1956) / Ali
Courtesy Metropolitan Museum, New York (Sabine Rewald)