- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)765
- Samizdat Archives24
- Samizdat Archives of Radio Free Europe10
- Soviet Red Archives9
- Radio Free Europe/Radio Liberty, Inc - Research Institute8
- Open Media Research Institute6
- Monitoring Unit5
- Radio Free Europe and Radio Liberty, Inc.3
- Hanák, Péter2
- Open Society Archives at Central European University2
- Ozerov, Yurii2
- Waliszewski, Kazimierz2
- Zemtsov, Ilya2
- Agraniants, Oleg1
- Alfred A. Reisch1
- Analytic Research Department1
- Aranovich, Semyon1
- Babelʹ, I.1
- Berdiaev, Nikolai1
- Borisov, Boris1