- Columbia University School of International Affairs358
- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)295
- Héderváry, Claire de186
- Open Society Archives at Central European University11
- Gábor Magos5
- Trotsky, Leon5
- Eisenstein, Sergei4
- Judith Gimes4
- Philipp, Tibor4
- Rühle, Jürgen4
- Seton-Watson, Hugh4
- Broomfield, Nick3
- Group Inconnu3
- Pallai, Péter3
- Périot, Jean-Gabriel3
- Radio Free Europe/Radio Liberty, Inc - Research Institute3
- Varga, László3
- de Héderváry, Claire3
- Ajtony, Árpád2
- Chiaureli, Mikhail2