- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)680
- Lennauchfilm6
- Tsentralnaia Studiia Dokumentalnykh Filmov (TsSDF)6
- Leningradskaia Studiia Dokumentalnykh Filmov (LSDF)5
- Vertov, Dziga5
- Geller, Mikhail4
- Dyker, David A.3
- Institut zur Erforschung der UdSSR3
- Laqueur, Walter3
- Barghoorn, Frederick Charles2
- Dallin, Alexander2
- Etkind, E. G.2
- Fischer, Louis2
- Florinsky, Michael T.2
- Katkov, George2
- Kotkin, Stephen2
- Librach, Jan2
- Litvinov, M. M.2
- Medvedev, Roy Aleksandrovich2
- Pares, Bernard2