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. From the T︠S︡entralen dŭrzhaven arkhiv (Central State Archives), Bulgaria, Fond 649; Opis 1. The United States Holocaust Memorial Museum Archives received the filmed collection via the United States Holocaust Memorial Museum International Programs Division in Feb. 2002.