Courtesy Thomas Ammann Fine Art AG
Courtesy Villa Grisebach, Berlin
bpk / The Metropolitan Museum of Art
Saint Louis Art Museum, Bequest of Morton D. May 851:1983
Saint Louis Art Museum, Bequest of Morton D. May 852:1983
Archiv Eigentümer(in) / Owner's archive
Courtesy Galerie Thomas, München
SHK / Hamburger Kunsthalle. Foto : Elke Walford