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2010 Christie's Images Limited

Collection Walker Art Center, Minneapolis. Gift of Mr. and Mrs. John Cowles, Sr. 1964

© Staatsgalerie Stuttgart

Hamburger Kunsthalle. Foto: Elke Walford

akg-images 255323

akg-images 5010389

Archiv Eigentümer(in) / Owner’s Archive. Foto: Peter Schälchli, Zürich