Museum Kunst der Westküste, Alkersum / Föhr. Foto: Lukas Spörl
Berlin, Berlinische Galerie
akg-images 3929242
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
Archiv Eigentümer(in) / Owner's archive
Museum Folkwang Essen / ARTOTHEK
Nationalgalerie, SMB / Jörg P. Anders
Courtesy Villa Grisebach, Berlin
Hilti Art Foundation, Schaan, Liechtenstein