Courtesy Thomas Ammann Fine Art AG
Saint Louis Art Museum, Bequest of Morton D. May 850:1983
Saint Louis Art Museum, Bequest of Morton D. May 851:1983
Städel Museum, Frankfurt am Main - U. Edelmann / ARTOTHEK
Photograph Courtesy of Sotheby's, Inc. © 2017
Archiv Eigentümer(in) / Owner's archive
Seattle Art Museum, 55.74, Gift of Sidney and Anne Gerber