Courtesy Villa Grisebach, Berlin
Archiv Eigentümer(in) / Owner’s Archive. Foto: Watzek Photographie, Hall i. Tirol
Archiv Eigentümer(in) / Owner's archive
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