Düren, Leopold Hoesch Museum. Foto: Aachen, Peter Hinschläger

Courtesy Galerie Thomas, München

As per the specifications of the heirs of the Copyright owner or the managing society. Provenance: Museo Nacional Thyssen-Bornemisza, Madrid

Courtesy Galerie Thomas, München

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

Saint Louis Art Museum, Bequest of Morton D. May 862:1983

2013 Christie's Images Limited