- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)31
- Open Society Archives at Central European University27
- Tarrio, Gustavo5
- Breitbart, Eric3
- De Nooijer, Paul3
- Nóvé, Béla3
- American Refugee Committee2
- Bartók, István2
- Dobrowolski, Irek2
- Dörries, Bernhard2
- Forgács, Péter2
- Frei, Christian2
- Group Inconnu2
- Hegedüs, András2
- Honigmann, Heddy2
- Karatay, Neşe2
- Marker, Chris2
- Meter, Barbara2
- Philipp, Tibor2
- Radio Free Europe/Radio Liberty, Inc - Research Institute2