The materials in this collection constitute a semi-random sample of the pre-war archive that was transferred to the Central State Archives of the Lithuanian Soviet Socialist Republic following the liquidation of the Vilnius Jewish Museum in 1949. The collection includes records of YIVO work and activities, financial records, correspondence, and publications; documents about pogroms in Ukraine, and Red Army and Soviet activity in Vilna and Bialystok; and a significant amount of records of socialist, communist, and Zionist political parties, as well as associated newspapers and one-time publications.