- Radio Free Europe/Radio Liberty, Inc - Research Institute19
- Samizdat Archives15
- Csákó, Mihály10
- Soviet Red Archives9
- Open Media Research Institute6
- Pastor, Peter5
- Samizdat Archives of Radio Free Europe4
- Hanák, Péter3
- Pallai, Péter3
- Balogh, Eva S.2
- Király, Béla2
- Monitoring Unit2
- Nóvé, Béla2
- Open Society Archives at Central European University2
- Ajtony, Árpád1
- Alfred A. Reisch1
- American Refugee Committee1
- Analytic Research Department1
- Balkan Section1
- British Broadcasting Corporation, Written Archive Centre1