- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)2,558
- Héderváry, Claire de130
- Open Society Archives at Central European University19
- Csákó, Mihály8
- David Rohde7
- Radio Free Europe/Radio Liberty, Inc - Research Institute7
- Open Media Research Institute5
- American Refugee Committee4
- Amnesty International3
- Bassiouni, M. Cherif3
- Giffard, Camille3
- Leningradskaia Studiia Dokumentalnykh Filmov (LSDF)3
- Tsentralnaia Studiia Dokumentalnykh Filmov (TsSDF)3
- Witness, Inc.3
- Ajtony, Árpád2
- Communist International. Congress2
- Damolin, Mario2
- Domaniczky, Endre2
- Group Inconnu2
- Klarin, Mirko2