- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)1,478
- Héderváry, Claire de340
- Radio Free Europe/Radio Liberty, Inc - Research Institute16
- Soviet Red Archives7
- Samizdat Archives5
- Pallai, Péter4
- Bortstieber, Gertrud3
- Csákó, Mihály3
- Hanák, Péter3
- Balogh, Eva S.2
- Bíró, András2
- Conquest, Robert2
- Daniels, Robert V.2
- Gábor Magos2
- Kardelj, Edvard2
- Lenin, Vladimir Ilʹich2
- Nóvé, Béla2
- Open Media Research Institute2
- Open Society Archives at Central European University2
- de Héderváry, Claire2