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Berlin / Köln, Archiv Mayen Beckmann. Foto: Fotostudio Bartsch, Berlin
Courtesy Villa Grisebach, Berlin
Collection Walker Art Center, Minneapolis. Gift of Mr. and Mrs. John Cowles, Sr. 1964
Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich
bpk / The Metropolitan Museum of Art
Saint Louis Art Museum, Bequest of Morton D. May 867:1983