Museum Kunst der Westküste, Alkersum / Föhr. Foto: Lukas Spörl
As per the specifications of the heirs of the Copyright owner or the managing society. Museo Nacional Thyssen-Bornemisza, Madrid
bpk / CNAC-MNAM / Philippe Migeat
Sprengel Museum Hannover / Michael Herling / Aline Gwose
