- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)633
- Samizdat Archives18
- Radio Free Europe/Radio Liberty, Inc - Research Institute8
- Soviet Red Archives8
- Open Media Research Institute6
- Monitoring Unit5
- Samizdat Archives of Radio Free Europe5
- Radio Free Europe and Radio Liberty, Inc.3
- Bukharin, Nikolai Ivanovich2
- Hanák, Péter2
- Open Society Archives at Central European University2
- Alfred A. Reisch1
- Analytic Research Department1
- Askol'dov, Sergei Alekseevich1
- Babii, Aleksandr Ivanovich1
- Bilenko, S. V.1
- Bonnėr, Elena1
- Borisov, Nikolai Sergeevich1
- Brutzkus, Boris1
- Chalidze, Valerii1