- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)85
- Tsentralnaia Studiia Dokumentalnykh Filmov (TsSDF)5
- Vertov, Dziga3
- Belarusfilm2
- Leningradskaia Studiia Dokumentalnykh Filmov (LSDF)2
- Sebag Montefiore, Simon2
- Amort, Čestmír1
- Applebaum, Anne1
- Bethell, Nicholas1
- Brackman, Roman1
- Brendon, Piers1
- Brod, Toman1
- Brooks, Jeffrey1
- Chamberlin, William Henry1
- Crankshaw, Edward1
- Donnelly, C. N.1
- Dreier, V. N. fon1
- Fainberg, Dina1
- Fischer, Louis1
- Fitzpatrick, Sheila1