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Museum Folkwang Essen / ARTOTHEK

Courtesy Galerie Thomas, München

Courtesy Metropolitan Museum, New York (Sabine Rewald)

Berlin, Archiv Wolfgang Wittrock

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bpk / Los Angeles County Museum of Art / Art Resource, NY

Columbus Museum of Art

Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich

Courtesy Metropolitan Museum, New York (Sabine Rewald)

Saint Louis Art Museum, Bequest of Morton D. May 867:1983