Einsatzstab Reichsleiter Rosenberg (ERR) was a Nazi organization that operated during World War II in the occupied territories of western and eastern Europe. ERR had broad powers in the ideological struggle against the enemies of National Socialism and the confiscation of materials belonging to ideological adversaries of Nazism (Bolshevism, Freemasonry, and Judaism, among others). Adolf Hitler bestowed these powers upon the Nazi Party ideologist, Alfred Rosenberg – the Führer’s personal representative for spiritual and ideological training, as well as the education of the members of the NSDAP (Nazi Party).

They include reports detailing inspections of private apartments, primarily those of Jewish citizens, and the “requisitioning” of libraries, archives, and private collections from such private residences. Judaica and Hebraica materials confiscated from public and private libraries alike were forwarded to the “Institute for Research of the Jewish Question,” a Nazi research center that had been envisioned as a museum which would chronicle Jewish life prior to its post-war extinction.