- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)2,038
- Radio Free Europe/Radio Liberty, Inc - Research Institute20
- Soviet Red Archives8
- Csákó, Mihály7
- Samizdat Archives7
- Pallai, Péter4
- Drachkovitch, Milorad M.3
- Hanák, Péter3
- Balogh, Eva S.2
- Bell, Daniel2
- Bíró, András2
- Conquest, Robert2
- Deutscher, Isaac2
- Djilas, Milovan2
- Ginzburg, Evgeniia Semenovna2
- Mao, Zedong2
- Nove, Alec2
- Nóvé, Béla2
- Open Media Research Institute2
- Open Society Archives at Central European University2