- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)22,719
- Radio Free Europe/Radio Liberty, Inc - Research Institute12
- Bortstieber, Gertrud8
- Nóvé, Béla7
- Soviet Red Archives5
- Pallai, Péter4
- Hanák, Péter3
- Samizdat Archives3
- Zsigmond, László3
- Balogh, Eva S.2
- Biberman, Herbert J.2
- Cséry, László2
- Erenburg, Ilʹia2
- Geréb, Anna2
- Gábor Magos2
- Hegedüs, András2
- Judith Gimes2
- Lennauchfilm2
- Mao, Zedong2
- Open Media Research Institute2