- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)14
- Pipes, Richard3
- Berdiaev, Nikolai2
- Conference on the Russian Revolution2
- Katkov, George2
- Leningradskaia Studiia Dokumentalnykh Filmov (LSDF)2
- Lennauchfilm2
- Reed, John2
- Schapiro, Leonard2
- Shkarenkov, L. K.2
- Solzhenitsyn, Aleksandr Isaevich2
- Stepun, Fedor2
- Sukhanov, N. N.2
- Trotsky, Leon2
- Abramovitch, Raphael R.1
- Aleksinskii, Grigorii Ivanovich1
- Aminado1
- Andreyev, Olga Chernov1
- Anin, David S.1
- Applebaum, Anne1