Kunsthalle Mannheim, Foto: Cem Yücetas

Städel Museum, Frankfurt am Main - U. Edelmann / ARTOTHEK

Courtesy Thomas Ammann Fine Art AG

Städel Museum, Frankfurt am Main - U. Edelmann / ARTOTHEK

Sprengel Museum Hannover / Michael Herling / Aline Gwose

akg-images 583024

© Staatsgalerie Stuttgart

Courtesy Galerie Thomas, München

Mark Ranney Memorial Fund 1946.1 - University of Iowa City Museum of Art. Reproduced with permission from The University of Iowa

Courtesy Metropolitan Museum, New York (Sabine Rewald)

Berlin, Archiv Wolfgang Wittrock

Hamburger Kunsthalle. Foto: Elke Walford

Kunsthalle Mannheim, Foto: Cem Yücetas