- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)3,147
- Héderváry, Claire de375
- Radio Free Europe/Radio Liberty, Inc - Research Institute19
- Soviet Red Archives8
- Samizdat Archives5
- Pallai, Péter4
- Bortstieber, Gertrud3
- Csákó, Mihály3
- Hanák, Péter3
- Balogh, Eva S.2
- Berdiaev, Nikolai2
- Bíró, András2
- Conquest, Robert2
- Daniels, Robert V.2
- Fischer, Louis2
- Kardelj, Edvard2
- Khrushchev, Nikita Sergeevich2
- Kohn, Hans2
- Lenin, Vladimir Ilʹich2
- Mao, Zedong2