The museum returned to the heirs of 1930s French-Jewish impressionist and post-impressionist art dealer Paul Rosenberg a painting by Henri Matisse which had been looted by Nazis in World War II, after having requested that the family sue in order to reach a legal settlement that included another art dealer. So in October 1997, Rosenberg's family filed suit in District Court, to recover the painting Odalisque (1927 or 1928). It was the first lawsuit against an American museum concerning ownership of Nazi plunder during World War II.