Archiv Eigentümer(in) / Owner's archive
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
Saint Louis Art Museum, Bequest of Morton D. May 858:1983
akg-images 442531