Saint Louis Art Museum, Bequest of Morton D. May 851:1983
Courtesy Galerie Thomas, München
Mildred Lane Kemper Art Museum, Washington University in St. Louis. University purchase, Kende Sale Fund, 1946.
Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich
2018 Christie's Images Limited
bpk / The Metropolitan Museum of Art
Collection Albright-Knox Art Gallery, Buffalo, New York. Room of Contemporary Art Fund, 1950 (RCA1950:1). Foto: Tom Loonan