Privatsammlung in der Hamburger Kunsthalle. Foto: Elke Walford
Courtesy Thomas Ammann Fine Art AG
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
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© Staatsgalerie Stuttgart
Minneapolis, Institute of Art
Richmond, Virginia Museum of Fine Arts. Foto: David Stover