- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)499
- Radio Free Europe/Radio Liberty, Inc - Research Institute8
- Nóvé, Béla6
- Soviet Red Archives5
- Bortstieber, Gertrud4
- Geréb, Anna2
- Hanák, Péter2
- Alfred A. Reisch1
- Analytic Research Department1
- Bulgarian Unit1
- Ciorănescu, Georges1
- Communist International (Comintern)1
- Czechoslovak Unit1
- Fondation pour une entraide intellectuelle européenne, FEIE1
- Hegedüs, András1
- Information Services Department1
- Magos-Gimes, Judit1
- Maulnier, Thierry1
- Open Media Research Institute1
- Polish Unit of RFE/RL Research Institute; RFE/RL RI1