- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)5,073
- Tsentralnaia Studiia Dokumentalnykh Filmov (TsSDF)15
- Lennauchfilm12
- Leningradskaia Studiia Dokumentalnykh Filmov (LSDF)9
- Open Media Research Institute7
- Héderváry, Claire de6
- Open Society Archives at Central European University5
- Pipes, Richard5
- Dallin, David J.4
- Fic, Victor M.4
- Katkov, George4
- Raeff, Marc4
- Salisbury, Harrison E.4
- Seminar Moskovskoi khelʹsinkskoi gruppy "Prava cheloveka"4
- Seton-Watson, Hugh4
- Ulam, Adam B.4
- Berdiaev, Nikolai3
- Capra, Frank3
- Deutscher, Isaac3
- Fischer, Louis3