New York, Museum of Modern Art (MoMA), Given anonymously (by exchange), 6.1942.a-c.© 2018. Digital image, The Museum of Modern Art, New York / Scala, Florence
Museum Folkwang Essen / ARTOTHEK
New York, Archiv Caroline Adler. Foto: Camerarts Inc., New York
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Hamburger Kunsthalle. Foto: Elke Walford
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Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich