Archiv Eigentümer(in) / Owner's archive. Foto: Maurice Aeschimann
Courtesy Hauser & Wirth Collection Services
Courtesy Beck & Eggeling, Düsseldorf
Courtesy Galerie Thomas, München
Harvard Art Museums /Fogg Museum, Bequest of Alfred Jaretzki, Jr., 1976.96. Foto: Imaging Department © President and Fellows of Harvard College
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