Christie's Images Limited © 2019. Christie's Images, London / Scala, Florence
Sprengel Museum Hannover / Aline Herling / Michael Herling / Benedikt Werner
Courtesy Galerie Thomas, München
Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich
Collection Albright-Knox Art Gallery, Buffalo, New York. Room of Contemporary Art Fund, 1950 (RCA1950:1). Foto: Tom Loonan