- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)2,135
- Radio Free Europe/Radio Liberty, Inc - Research Institute21
- Csákó, Mihály10
- Nóvé, Béla9
- Soviet Red Archives9
- Samizdat Archives7
- Gábor Magos5
- Hegedüs, András4
- Judith Gimes4
- Pallai, Péter4
- Drachkovitch, Milorad M.3
- Hanák, Péter3
- Lasswell, Harold D.3
- Pilʹniak, Boris3
- Terts, Abram3
- Varga, László3
- Adenauer, Konrad2
- Balogh, Eva S.2
- Bíró, András2
- Ciołkoszowa, Lidia2