- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)1,775
- Radio Free Europe/Radio Liberty, Inc - Research Institute21
- Samizdat Archives15
- Csákó, Mihály12
- Soviet Red Archives10
- Nóvé, Béla9
- Visnews8
- UPTIN7
- Amal'rik, Andrei5
- Gábor Magos5
- Judith Gimes4
- Pallai, Péter4
- Hanák, Péter3
- Hungarian Ministry of the Interior3
- Kemény, István3
- Radio Free Europe and Radio Liberty, Inc.3
- Samizdat Archives of Radio Free Europe3
- Varga, László3
- Zwartjes, Frans3
- Balogh, Eva S.2