Piet Mondrian
Claims for Nazi looted art

In October 2020, Mondrian's heirs filed a lawsuit in a U.S. court against the Kaiser Wilhelm Museum in Krefeld, Germany, for the return of four paintings by Mondrian.

In December 2021, Mondrian's heirs sued the Philadelphia Museum of Art for the return of Mondrian's Composition with Blue (1928) which had been seized by the Nazis, and passed through the art dealers Karl Buchholz and Curt Valentin before being gifted to the museum by Albert E. Gallatin.
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