- Héderváry, Claire de3,523
- Columbia University School of International Affairs358
- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)295
- Open Society Archives at Central European University11
- Trotsky, Leon7
- Hollós, Ervin6
- Eörsi, László5
- Gábor Magos5
- Eisenstein, Sergei4
- Gyurkó, László4
- Judith Gimes4
- Katkov, George4
- Méray, Tibor4
- Pallai, Péter4
- Philipp, Tibor4
- Pipes, Richard4
- Rühle, Jürgen4
- Seton-Watson, Hugh4
- Varga, László4
- Broomfield, Nick3