- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)1,231
- Samizdat Archives15
- Radio Free Europe/Radio Liberty, Inc - Research Institute10
- Soviet Red Archives8
- Pilʹniak, Boris5
- Samizdat Archives of Radio Free Europe3
- Daniel, IUlii2
- Gaidai, Leonid2
- Geréb, Anna2
- Hanák, Péter2
- Marushkin, B. I.2
- Open Society Archives at Central European University2
- Radio Free Europe and Radio Liberty, Inc.2
- Samsonov, Aleksandr Mikhailovich2
- Solzhenitsyn, Aleksandr Isaevich2
- Tokarev, Sergei Aleksandrovich2
- Aimanov, Shaken1
- Akhmatova, Anna Andreevna1
- Al'tshuler, Moisei Solomonovich1
- Aldanov, Mark Aleksandrovich1