- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)3,468
- Soros, George3
- Adam, Jan2
- Gomulka, Stanislaw2
- Konrád, György2
- Besemeres, John F.1
- Bethell, Nicholas1
- Blinken, Antony J.1
- Brendon, Piers1
- Brown, J. F.1
- Dalos, György1
- Daniel, Hawthorne1
- Dewar, Margaret1
- Economist Intelligence Unit (Great Britain)1
- Fejtő, François1
- Gawenda, Jerzy August Bolesław1
- Griffith, William E.1
- Gunther, John1
- Jamgotch, Nish1
- Johnson, A. Ross1