Privatsammlung in der Hamburger Kunsthalle. Foto: Elke Walford
© Staatsgalerie Stuttgart
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
- / ARTOTHEK
Minneapolis, Institute of Art