- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)128,960
- Samizdat Archives10
- Radio Free Europe/Radio Liberty, Inc - Research Institute6
- Samizdat Archives of Radio Free Europe6
- Soviet Red Archives6
- Héderváry, Claire de5
- Radio Free Europe and Radio Liberty, Inc.4
- Dahrendorf, Ralf3
- Open Society Archives at Central European University3
- Capra, Frank2
- Fekete Doboz Alapítvány2
- Garey, Diane2
- Hott, Lawrence2
- Parta, R. Eugene2
- Shevchik, E. V.2
- Takács, István Gábor2
- Acton, John Emerich Edward Dalberg Acton1
- Acton, John Emerich Edward Dalberg Acton, Barón1
- Alekseeva, Liudmila1
- Alfred A. Reisch1