Chicago, Art Institute of Chicago, Joseph Winterbotham Collection, 1988.220© 2018. The Art Institute of Chicago / Art Resource, NY / Scala, Florence
Courtesy Thomas Ammann Fine Art AG
New York, Museum of Modern Art (MoMA), Given anonymously (by exchange), 6.1942.a-c.© 2018. Digital image, The Museum of Modern Art, New York / Scala, Florence