Saint Louis Art Museum, Bequest of Morton D. May 842:1983
bpk / CNAC-MNAM
Washington, National Gallery of Art. Gift (Partial and Promised) of Arnold and Joan Saltzman 2006.164.1
Archiv Eigentümer(in) / Owner's archive
Sprengel Museum Hannover / Michael Herling / Aline Gwose
Courtesy Galerie Thomas, München
Berlin / Köln, Archiv Mayen Beckmann. Foto: Fotostudio Bartsch, Berlin