- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)1,212
- Radio Free Europe/Radio Liberty, Inc - Research Institute19
- Soviet Red Archives8
- Samizdat Archives7
- Csákó, Mihály5
- Héderváry, Claire de5
- Pallai, Péter4
- Hanák, Péter3
- Balogh, Eva S.2
- Bíró, András2
- Caute, David2
- Gábor Magos2
- Nóvé, Béla2
- Open Media Research Institute2
- Open Society Archives at Central European University2
- Samizdat Archives of Radio Free Europe2
- Treadgold, Donald W.2
- Abrikosov, Dmitriĭ Ivanovich1
- Agentstvo pechati "Novosti"1
- Alexandrov, Victor1