On 9 November 1938 , Kristallnacht , he was arrested and sent to the Sachsenhausen concentration camp . The collection was stolen by order of Joseph Goebbels , who wanted them for a proposed new wing devoted to business art in the '' Kunstgewerbemuseum Berlin '' ( Museum of Decorative Arts ) . After 17 days in the concentration camp , Sachs was released , and with his second wife Felicia and their one-year-old son Peter were able to escape from Germany , first to London for a few days , and then to New York . From his former collection he was able to take with him only the 31 posters by Toulouse-Lautrec , which he later sold in America . Despite a recommendation from his former patient in Berlin , Albert Einstein , that he was well qualified to practice dentistry , he had to return to school , getting a second doctorate in dentistry from the Harvard School of Dental Medicine in 1941 . In the 1950s , he was told by the West German government that the posters had been destroyed by the Russians . In 1961 he accepted compensation of about 225,000 marks , then about $ 25,000 . But in 1966 , many were rediscovered in East Berlin , in the basement of the '' Deutsches Historisches Museum '' ( German Historical Museum ) . Sachs 's posters were identified by his label affixed to the back . Although Sachs flew to Berlin in 1974 , he was not allowed to enter East Berlin . He died that year on March 21 without seeing his posters again
Kristallnacht
Kristallnacht
Hans Sachs (poster collector)