- Open Society Archives at Central European University35
- Samizdat Archives21
- Samizdat Archives of Radio Free Europe10
- Open Media Research Institute8
- Fekete Doboz Alapítvány4
- Radio Free Europe/Radio Liberty, Inc - Research Institute4
- Nóvé, Béla3
- Pallai, Péter3
- Radio Free Europe and Radio Liberty, Inc.3
- Vajda, Júlia3
- Soviet Red Archives2
- BBC1
- Balogh, Eva S.1
- Bortstieber, Gertrud1
- Bozóki, András1
- British Broadcasting Corporation, Written Archive Centre1
- Geréb, Anna1
- Great Britain, Foreign and Commonwealth Office1
- Group Inconnu1
- Gábor Magos1