2007 Christie's Images Limited
- / ARTOTHEK
akg-images 5001601
2004 Christie's Images Limited
Courtesy Thomas Ammann Fine Art AG
Courtesy Koller Auktionen, Zürich
Sotheby's Deutschland
akg-images 255323
Board of the Trustees of the University of Illinois on behalf of its Krannert Art Museum University of Illinois. Purchase through the Festival of Arts Purchase fund 1950-2-1