Kunsthalle Bielefeld. Foto: Philipp Ottendörfer

Solomon R. Guggenheim Museum, New York 70.1927

Ahlen, Kaldewei Kulturstiftung / Courtesy Galerie Kornfeld, Bern

Los Angeles Iris & B. Gerald Cantor Foundation

Schloßmuseum Murnau, Bildarchiv

Courtesy Galerie Thomas, München

Kansas City, Missouri, The Nelson-Atkins Museum of Art. Gift of the Friends of Art, 54-86. Image courtesy Nelson-Atkins Media Services / Photo: Jamison Miller

Houston, Sarah Campbell Blaffer Foundation

Ahlen, Kaldewei Kulturstiftung. Foto: Camerarts, Inc., New York