- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)9
- Pastor, Peter4
- Radio Free Europe/Radio Liberty, Inc - Research Institute4
- Csákó, Mihály3
- Philipp, Tibor3
- Samizdat Archives3
- Varga, László3
- Hanák, Péter2
- Leningradskaia Studiia Dokumentalnykh Filmov (LSDF)2
- Péter Forgács2
- Alfred A. Reisch1
- Bulgarian Unit1
- Delannoy, Gilles1
- Demszky, Gábor1
- Fic, Victor M.1
- Geréb, Anna1
- Group Inconnu1
- Hungarian Ministry of the Interior1
- Information Services Department1
- Jakab, Lajos1