- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)141
- Radio Free Europe/Radio Liberty, Inc - Research Institute9
- Samizdat Archives7
- Soviet Red Archives7
- Bortstieber, Gertrud5
- Geréb, Anna2
- Hanák, Péter2
- Minaev, Vladislav Nikolaevich2
- Open Society Archives at Central European University2
- Osipov, Aleksandr Aleksandrovich2
- Radio Free Europe and Radio Liberty, Inc.2
- Samizdat Archives of Radio Free Europe2
- Terts, Abram2
- Abbasov, Shukhrat1
- Akademiia nauk Kazakhskoi SSR, Alma-Ata. Institut istorii, arkheologii i etnografii1
- Akademiia nauk SSSR. Institut istorii1
- Al'perovich, IUrii Izrailevich1
- Albrecht, Erhard1
- Alfred A. Reisch1
- Almazov, Sergei Frantsevich1