- Columbia University School of International Affairs358
- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)181
- Héderváry, Claire de180
- Open Society Archives at Central European University10
- Trotsky, Leon5
- Broomfield, Nick3
- Pallai, Péter3
- Seton-Watson, Hugh3
- Figes, Orlando2
- Fischer, George2
- Király, Béla2
- Mandelbaum, Juan2
- Pipes, Richard2
- Radio Free Europe/Radio Liberty, Inc - Research Institute2
- Sukhanov, N. N.2
- Tucker, Robert C.2
- Zeman, Z. A. B.2
- Abraham, Richard1
- Abramovitch, Raphael R.1
- Ajtony, Árpád1