Nationalgalerie, SMB / Jörg P. Anders
Mark Ranney Memorial Fund 1946.1 - University of Iowa City Museum of Art. Reproduced with permission from The University of Iowa
Milwaukee Art Museum. Gift of Mr. and Mrs. Malcolm K. Whyte. Foto: Efraim Lev-er
Städel Museum, Frankfurt am Main - U. Edelmann / ARTOTHEK