Museum Osthaus, Hagen. Foto: Achim Kukulies, Düsseldorf
- / ARTOTHEK
Courtesy Thomas Ammann Fine Art AG
Archiv Eigentümer(in) / Owner's archive
Mark Ranney Memorial Fund 1946.1 - University of Iowa City Museum of Art. Reproduced with permission from The University of Iowa
Courtesy Galerie Thomas, München
Kunsthalle Mannheim, Foto: Cem Yücetas
Nationalgalerie, SMB / Jörg P. Anders
bpk / The Metropolitan Museum of Art