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

Collection of Phoenix Art Museum, Gift of Dr. and Mrs. Richard Levy

Columbus Museum of Art

Museum Folkwang Essen / ARTOTHEK

SHK / Hamburger Kunsthalle. Foto : Elke Walford