Solomon R. Guggenheim Museum, New York 70.1927
Deutsches Literaturarchiv Marbach / Foto: Chris Korner
Los Angeles Iris & B. Gerald Cantor Foundation
Chicago, Art Institute of Chicago, Gift of Lotta Hess Ackerman and Philip E. Ringer, 1955.822© 2018. The Art Institute of Chicago / Art Resource, NY / Scala, Florence
Kunsthalle Bremen – Der Kunstverein in Bremen. Foto: Lars Lohrisch
Saint Louis Art Museum, Bequest of Morton D. May 851:1983