Privatsammlung in der Hamburger Kunsthalle. Foto: Elke Walford

Ahlen, Kaldewei Kulturstiftung. Foto: Fredrik Nilsen Studio, Los Angeles

München, Ketterer Kunst GmbH & Co. KG

New York, Museum of Modern Art (MoMA), Curt Valentin Bequest, 328.1955© 2018. Digital image, The Museum of Modern Art, New York / Scala, Florence

- / ARTOTHEK

Minneapolis, Institute of Art

Kunsthalle Bremen – Der Kunstverein in Bremen. Foto: Lars Lohrisch

Museum Folkwang Essen / ARTOTHEK

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