- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)1,182
- Samizdat Archives19
- Radio Free Europe/Radio Liberty, Inc - Research Institute9
- Soviet Red Archives8
- Samizdat Archives of Radio Free Europe6
- Open Media Research Institute3
- Radio Free Europe and Radio Liberty, Inc.3
- Geréb, Anna2
- Hanák, Péter2
- Open Society Archives at Central European University2
- Alfred A. Reisch1
- Amal'rik, Giuzel'1
- Analytic Research Department1
- Antonovich, Ivan Ivanovich1
- Avtorkhanov, Abdurakhman1
- Bazunov, B.1
- Belov, Anatolii Vasil'evich1
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- Carpovich, Vera1
- Chalidze, Valerii1