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Washington, National Gallery of Art. Gift (Partial and Promised) of Arnold and Joan Saltzman 2006.164.1
Sprengel Museum Hannover / Michael Herling / Aline Gwose
Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich
Berlin / Köln, Archiv Mayen Beckmann. Foto: Fotostudio Bartsch, Berlin