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

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

Courtesy Metropolitan Museum, New York (Sabine Rewald)

Harvard Art Museums /Fogg Museum, Bequest of Alfred Jaretzki, Jr., 1976.96. Foto: Imaging Department © President and Fellows of Harvard College