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

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

Museum Folkwang Essen / ARTOTHEK