- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)14
- Samizdat Archives11
- Samizdat Archives of Radio Free Europe8
- Bortstieber, Gertrud5
- Radio Free Europe/Radio Liberty, Inc - Research Institute5
- Hanák, Péter3
- Open Society Archives at Central European University3
- Nóvé, Béla2
- Soros Foundation–Hungary2
- Soviet Red Archives2
- Szekfű, András2
- Vajda, Júlia2
- Alfred A. Reisch1
- Bak, Gamma1
- Balogh, Eva S.1
- Beckermann, Ruth1
- Communist International (Comintern)1
- Constitutional and Legal Policy Institute at OSI-Budapest1
- Csákó, Mihály1
- Cummings, Tanja1