2007 Christie's Images Limited
San Francisco Museum of Modern Art, Gift of Louise S. Ackerman. Foto: Katherine Du Tiel
akg-images 5001601
Museum Ostwall im Dortmunder U. Foto: Jürgen Spiler, Dortmund
Collection Walker Art Center, Minneapolis. Gift of Mr. and Mrs. John Cowles, Sr. 1964
Ludwigshafen, Wilhelm-Hack-Museum
Courtesy Thomas Ammann Fine Art AG
Ahlen, Kaldewei Kulturstiftung. Foto: Fotostudio Bartsch, Berlin
© Staatsgalerie Stuttgart
akg-images 255323
Museum Folkwang Essen / ARTOTHEK
Fort Dodge, Blanden Art Museum
Collection Albright-Knox Art Gallery, Buffalo, New York. Room of Contemporary Art Fund, 1950 (RCA1950:1). Foto: Tom Loonan