- Samizdat Archives12
- Open Society Archives at Central European University9
- Open Media Research Institute7
- Samizdat Archives of Radio Free Europe7
- Soviet Red Archives6
- Radio Free Europe/Radio Liberty, Inc - Research Institute5
- Monitoring Unit3
- Pallai, Péter3
- Bortstieber, Gertrud2
- Radio Free Europe and Radio Liberty, Inc.2
- British Broadcasting Corporation, Written Archive Centre1
- Fekete Doboz Alapítvány1
- Geréb, Anna1
- Great Britain, Foreign and Commonwealth Office1
- Jakab, Lajos1
- Kun, Miklós1
- Philipp, Tibor1
- Péter Forgács1
- United States of America, Department of State1
- United States, National Archives and Records Administration1