New York, Museum of Modern Art (MoMA), Curt Valentin Bequest, 328.1955© 2018. Digital image, The Museum of Modern Art, New York / Scala, Florence

Saint Louis Art Museum, Bequest of Morton D. May 841:1983

Collection Van Abbemuseum, Eindhoven, The Netherlands. Photo: Peter Cox, Eindhoven, The Netherlands

Christie's Images Ltd / ARTOTHEK

Sammlung Würth, Künzelsau. Foto: Archiv Würth

bpk / The Metropolitan Museum of Art

Saint Louis Art Museum, Bequest of Morton D. May 867:1983

- / ARTOTHEK

Courtesy Thomas Ammann Fine Art AG