- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)1,669
- Héderváry, Claire de233
- 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
- Gábor Magos2
- Nóvé, Béla2
- Open Media Research Institute2
- Open Society Archives at Central European University2
- Payne, Robert2
- de Héderváry, Claire2
- Alfred A. Reisch1
- American Assembly1