Saint Louis Art Museum, Bequest of Morton D. May 843:1983
2010 Christie's Images Limited
Collection Walker Art Center, Minneapolis. Gift of Mr. and Mrs. John Cowles, Sr. 1964
Leipzig, Museum der bildenden Künste
Courtesy Thomas Ammann Fine Art AG
akg-images 255092
akg-images 5010389
Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich
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