- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)503
- Samizdat Archives5
- Geller, Mikhail4
- Aizenberg, Alexander3
- Askol'dov, Sergei Alekseevich2
- Avtorkhanov, Abdurakhman2
- Chiaureli, Mikhail2
- Hanák, Péter2
- Katkov, George2
- Kun, Miklós2
- Lenin, Vladimir Il'ich2
- Lisavtsev, Emilii Ivanovich2
- Melʹgunov, S. P.2
- Nikol'skii, Nikolai Mikhailovich2
- Open Society Archives at Central European University2
- Radio Free Europe/Radio Liberty, Inc - Research Institute2
- Samizdat Archives of Radio Free Europe2
- Sheinman, Mikhail Markovich2
- Shkarenkov, L. K.2
- Solzhenitsyn, Aleksandr Isaevich2