- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)15
- Open Society Archives at Central European University5
- Héderváry, Claire de2
- Morris, Errol2
- Samizdat Archives2
- Aleksievich, Svetlana1
- Bassiouni, M. Cherif1
- Bauer, Christian1
- Beesley, Bradley1
- Blum, Deborah1
- Bolbrinker, Niels1
- Bories, Claudine1
- Chagnard, Patrice1
- Chica, De La Pablo1
- Cousseau, Frederic1
- Csákó, Mihály1
- David, Ruth L.1
- Davies, John1
- Drew, Robert1
- Drolenga, Bart1