- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)2,360
- Radio Free Europe/Radio Liberty, Inc - Research Institute21
- Csákó, Mihály9
- Nóvé, Béla9
- Soviet Red Archives9
- Samizdat Archives7
- Gábor Magos5
- Héderváry, Claire de5
- Hegedüs, András4
- Judith Gimes4
- Pallai, Péter4
- Hanák, Péter3
- Terts, Abram3
- Varga, Eugen3
- Varga, László3
- Balogh, Eva S.2
- Belov, Anatolii Vasil'evich2
- Brzezinski, Zbigniew2
- Buzek, Antony2
- Bíró, András2