- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)30,053
- Samizdat Archives31
- Open Media Research Institute17
- Samizdat Archives of Radio Free Europe13
- Open Society Archives at Central European University10
- Radio Free Europe/Radio Liberty, Inc - Research Institute10
- Soviet Red Archives10
- Solzhenitsyn, Aleksandr Isaevich9
- Zinoviev, Aleksandr9
- Romm, Mikhail8
- Aldanov, Mark Aleksandrovich7
- Monitoring Unit7
- Pilʹniak, Boris7
- Berdiaev, Nikolai6
- Chiaureli, Mikhail6
- Dudko, Dmitrii6
- Aizenberg, Alexander5
- Aleksandrov, Grigori5
- Avtorkhanov, Abdurakhman5
- Bortstieber, Gertrud5