Courtesy Galerie Thomas, München
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Collection of Phoenix Art Museum, Gift of Dr. and Mrs. Richard Levy
Berlin, Archiv Wolfgang Wittrock
© Staatsgalerie Stuttgart
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bpk / Los Angeles County Museum of Art / Art Resource, NY
Archiv Eigentümer(in) / Owner’s Archive. Courtesy Franca Candrian, Kunsthaus Zürich.
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Kunstmuseum Den Haag