- Samizdat Archives25
- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)17
- Open Media Research Institute12
- Samizdat Archives of Radio Free Europe12
- Open Society Archives at Central European University11
- Radio Free Europe/Radio Liberty, Inc - Research Institute10
- Soviet Red Archives9
- Monitoring Unit4
- Bortstieber, Gertrud3
- Bergkraut, Eric2
- Conciliation Resources (Organization)2
- Hanák, Péter2
- Sárosi, Péter2
- Aitmatov, Chingiz1
- Aldanov, Mark Aleksandrovich1
- Alexeev, Vasilii Ivanovich1
- Alfred A. Reisch1
- Analytic Research Department1
- Berdiaev, Nikolai1
- Berghäll, Joonas .1