Nationalgalerie, SMB / Jörg P. Anders
Saint Louis Art Museum, Bequest of Morton D. May 851:1983
Courtesy Galerie Thomas, München
Courtesy Metropolitan Museum, New York (Sabine Rewald)
akg-images 583036
akg-images 255323
Christie's Images Ltd / ARTOTHEK
Minneapolis, Institute of Art
Ann Arbor, University of Michigan Museum of Art
Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich