- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)4,581
- Samizdat Archives20
- Radio Free Europe/Radio Liberty, Inc - Research Institute10
- Soviet Red Archives8
- Samizdat Archives of Radio Free Europe6
- Brezhnev, Leonid Ilʹich4
- Medvedev, Zhores A.3
- Radio Free Europe and Radio Liberty, Inc.3
- Amal'rik, Andrei2
- Geréb, Anna2
- Hanák, Péter2
- Open Media Research Institute2
- Open Society Archives at Central European University2
- Pilʹniak, Boris2
- Solzhenitsyn, Aleksandr Isaevich2
- Alfred A. Reisch1
- Analytic Research Department1
- Anin, David S.1
- Aver'ianov, Anatolii Nikolaevich1
- Bakhitov, M. Sh1