Von der Heydt-Museum Wuppertal. Foto: Antje Zeis-Loi, Medienzentrum Wuppertal

Courtesy Thomas Ammann Fine Art AG

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

Minneapolis, Institute of Art

Seattle Art Museum, 55.74, Gift of Sidney and Anne Gerber