- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)92
- Open Society Archives at Central European University5
- Héderváry, Claire de4
- Samizdat Archives4
- Blinken, Donald2
- Kantautas, Adam2
- Samizdat Archives of Radio Free Europe2
- Varga, László2
- Abbott, Christine1
- Alemu, Getaneh1
- Allworth, Edward1
- Barkow, Ben1
- Black, Kirsten1
- Bortstieber, Gertrud1
- Brown, Adrian1
- Cohn, John M.1
- Communist International (Comintern)1
- Cornish, Graham P.1
- Cox, Richard J.1
- Csákó, Mihály1