Kunsthalle Bremen – Der Kunstverein in Bremen. Foto: Lars Lohrisch
Hilti Art Foundation, Schaan, Liechtenstein
Saint Louis Art Museum, Bequest of Morton D. May 849:1983
London, Marie-Louise von Motesiczky Charitable Trust
Boston, Museum of Fine Arts
Saint Louis Art Museum, Bequest of Morton D. May 862:1983
Washington D. C., Smithsonian Institution, Hirshorn Museum and Sculpture Garden. Gift of the Joseph H. Hirshhorn Foundation, 1966. Foto: Lee Stalsworth