From the T︠S︡entralen dŭrzhaven arkhiv (Central State Archives), Bulgaria, Fond 356, Opis 1.
United States Holocaust Memorial Museum http://collections.ushmm.org/search/catalog/irn514482
Contains correspondence and list of members of the Association of Bulgarian Dentists. Includes correspondence relating to the confiscation of telephones from Jewish offices and prohibition of dental practices by Jews.
Български зъболекарски съюз