2007 Christie's Images Limited
Städel Museum, Frankfurt am Main - U. Edelmann / ARTOTHEK
Rosemarie Ketterer Stiftung, Kirchner Museum Davos
Archiv Eigentümer(in) / Owner's archive
akg-images 228132
Washington D. C., Smithsonian Institution, Hirshorn Museum and Sculpture Garden. Gift of the Joseph H. Hirshhorn Foundation, 1966. Foto: Lee Stalsworth