[3] The Ullsteins were a Jewish family, which led to their persecution, the loss of their publishing house and exile when the Nazis came to power in Germany.
[4] Artworks he once owned are now in major museums, such as Monet's Garden at Giverny, and Gustave Courbet's Portrait du sculpteur Louis-Joseph Lebœuf, at the collection of the Fondation Emil Bührle.
[8] The Ullsteins were persecuted and plundered of their assets through anti-Jewish racial laws that imposed special confiscatory taxes on Jews as well as outright expropriation.
[8] The efforts of the Ullstein family to obtain restitution of the properties stolen from them under the Nazis encountered many obstacles and were extremely difficult.
[11] The author Juliane Berndt wrote a study on the process entitled, Die Restitution des Ullstein-Verlags (1945–52).