Berlin / Köln, Archiv Mayen Beckmann
Städel Museum, Frankfurt am Main - U. Edelmann / ARTOTHEK
Courtesy Thomas Ammann Fine Art AG
Archiv Eigentümer(in) / Owner's archive
2013 Christie's Images Limited
Washington D. C., Smithsonian Institution, Hirshorn Museum and Sculpture Garden. Gift of the Joseph H. Hirshhorn Foundation, 1966. Foto: Lee Stalsworth