- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)519
- Samizdat Archives19
- Open Media Research Institute15
- Samizdat Archives of Radio Free Europe9
- Soviet Red Archives7
- Monitoring Unit6
- Radio Free Europe/Radio Liberty, Inc - Research Institute4
- Lenin, Vladimir Il'ich3
- Radio Free Europe and Radio Liberty, Inc.3
- Aizenberg, Alexander2
- Bukharin, Nikolai Ivanovich2
- Moroz, Konstantin Vasil'evich2
- Alexeev, Vasilii Ivanovich1
- Alfred A. Reisch1
- Andreev, Ivan Dmitrievich1
- Aver'ianov, Anatolii Nikolaevich1
- Belov, P.1
- Bortstieber, Gertrud1
- Chesnokov, Dmitrii Ivanovich1
- Communist International (Comintern)1