- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)1,066
- Radio Free Europe/Radio Liberty, Inc - Research Institute20
- Soviet Red Archives8
- Samizdat Archives7
- Csákó, Mihály5
- Pallai, Péter4
- Hanák, Péter3
- Balogh, Eva S.2
- Bíró, András2
- Gábor Magos2
- Halperin, Morton H.2
- Hegedüs, András2
- Lasswell, Harold D.2
- Lonsdale, Gordon Arnold2
- Nóvé, Béla2
- Open Media Research Institute2
- Open Society Archives at Central European University2
- Samizdat Archives of Radio Free Europe2
- Trotsky, Leon2
- Wolfe, Bertram David2