- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)1,148
- Radio Free Europe/Radio Liberty, Inc - Research Institute9
- Bortstieber, Gertrud8
- Soviet Red Archives6
- Héderváry, Claire de5
- Samizdat Archives4
- Hanák, Péter3
- Nóvé, Béla2
- Open Media Research Institute2
- Alfred A. Reisch1
- Analytic Research Department1
- Balkan Section1
- Balogh, Eva S.1
- Bohn, Helmut1
- Bulgarian Unit1
- Communist International (Comintern)1
- Constitutional and Legal Policy Institute at OSI-Budapest1
- Csákó, Mihály1
- Czechoslovak Unit1
- Dallin, David J.1