- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)12,767
- Radio Free Europe/Radio Liberty, Inc - Research Institute9
- Bortstieber, Gertrud8
- Héderváry, Claire de8
- Soviet Red Archives6
- Samizdat Archives4
- Hanák, Péter3
- Dörries, Bernhard2
- Feketekúty, László2
- Institut zur Erforschung der UdSSR2
- Kautsky, Karl2
- Koch, Hans2
- Marx, Karl2
- Mehnert, Klaus2
- Nóvé, Béla2
- Open Media Research Institute2
- Pohle, Heinz2
- Untersuchungsausschuss Freiheitlicher Juristen2
- Alfred A. Reisch1
- Analytic Research Department1