Archiv Eigentümer(in) / Owner's archive
New York, Richard L. Feigen
Emden, Kunsthalle Kunsthalle Emden
akg-images 223155
Collection Walker Art Center, Minneapolis. Gift of Mr. and Mrs. John Cowles, Sr. 1964
Ludwigshafen, Wilhelm-Hack-Museum
Courtesy Thomas Ammann Fine Art AG
Courtesy Thomas Ammann Fine Art AG
Berlin / Köln, Archiv Mayen Beckmann. Foto: Fotostudio Bartsch, Berlin