Christie's Images Limited © 2019. Christie's Images, London / Scala, Florence
Courtesy Galerie Thomas, München
Courtesy Beck & Eggeling, Düsseldorf
Archiv Eigentümer(in) / Owner's archive
Courtesy Metropolitan Museum, New York (Sabine Rewald)
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Rheinisches Bildarchiv Köln: Schlier, Britta, 11..2.31.0 - rba_d039975
Berlin, Archiv Wolfgang Wittrock
akg-images 583036
bpk / Los Angeles County Museum of Art / Art Resource, NY
akg-images 255323
Minneapolis, Institute of Art
Columbus Museum of Art
Boston, Museum of Fine Arts
Sprengel Museum Hannover, Kunstbesitz der Landeshauptstadt Hannover, Schenkung Volkswagenwerk GmbH, Wolfsburg (1956) / Ali
Saint Louis Art Museum, Bequest of Morton D. May 862:1983
Courtesy Metropolitan Museum, New York (Sabine Rewald)