Archiv Eigentümer(in) / Owner's archive
Courtesy Galerie Thomas, München
bpk / Nationalgalerie, SMB / Andres Kilger
Milwaukee Art Museum. Gift of Mr. and Mrs. Malcolm K. Whyte. Foto: Efraim Lev-er
Boston, Museum of Fine Arts
Seattle Art Museum, 55.74, Gift of Sidney and Anne Gerber