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 Regional State Archives in Plovdiv, Bulgaria, records obtained through the cooperative project with the Yad Vashem, Israel. The United States Holocaust Memorial Museum received the collection via the United States Holocaust Memorial Museum International Archival Programs Division in 2016 and accretion in 2017.