- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)21,346
- Radio Free Europe/Radio Liberty, Inc - Research Institute12
- Soviet Red Archives5
- Bortstieber, Gertrud4
- Pallai, Péter4
- Hanák, Péter3
- Samizdat Archives3
- Balogh, Eva S.2
- Biberman, Herbert J.2
- Carr, Edward Hallett2
- Fischer, George2
- Kolarz, Walter2
- Liu, Shaoqi2
- Mao, Zedong2
- Nóvé, Béla2
- Open Media Research Institute2
- Orr, Charles Andrew2
- Seton-Watson, Hugh2
- Sheen, Fulton J.2
- United States. Congress. House. Committee on Un-American Activities2