- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)2,302
- Héderváry, Claire de49
- Conquest, Robert17
- Medvedev, Roy Aleksandrovich11
- Samizdat Archives11
- Khrushchev, Nikita Sergeevich9
- Open Society Archives at Central European University9
- Brzezinski, Zbigniew7
- Nove, Alec7
- Radio Free Europe/Radio Liberty, Inc - Research Institute7
- Samizdat Archives of Radio Free Europe7
- Solzhenitsyn, Aleksandr Isaevich7
- Dallin, Alexander6
- Institut zur Erforschung der UdSSR6
- Open Media Research Institute6
- Pipes, Richard6
- Schapiro, Leonard Bertram6
- Soviet Red Archives6
- Carr, Edward Hallett5
- Dallin, David J.5