Forms part of the Claims Conference International Holocaust Documentation Archive at the United States Holocaust Memorial Museum. This archive consists of documentation whose reproduction and/or acquisition was made possible with funding from the Conference on Jewish Material Claims Against Germany. Source of acquisition is the T︠S︡entralen dŭrzhaven arkhiv (Central State Archives ), Bulgaria. Records created by the Ministry of the Interior and Health of the Republic of Bulgaria, Sofia. The United States Holocaust Memorial Museum Archives received the collection via the United States Holocaust Museum International Archives Project in 1997, and the accretion in 2013.