Courtesy Thomas Ammann Fine Art AG

Toledo Museum of Art. Purchased with funds from the Libbey Endowment, Gift of Edward Drummond Libbey, 1983.20

Courtesy Villa Grisebach, Berlin

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Saint Louis Art Museum, Bequest of Morton D. May 851:1983

Von der Heydt-Museum Wuppertal. Foto: Antje Zeis-Loi, Medienzentrum Wuppertal

Archiv Eigentümer(in) / Owner's archive

Courtesy Galerie Thomas, München