- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)2,354
- Radio Free Europe/Radio Liberty, Inc - Research Institute21
- Samizdat Archives15
- Csákó, Mihály11
- Soviet Red Archives9
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Europe and the Middle East7
- Open Media Research Institute6
- Visnews6
- Pastor, Peter5
- UPTIN5
- Pallai, Péter4
- Samizdat Archives of Radio Free Europe4
- United States. Congress. House. Committee on Foreign Affairs4
- United States. Department of State4
- Hanák, Péter3
- Medvedev, Roy Aleksandrovich3
- Pincher, Chapman3
- United States. Congress. Senate. Committee on Foreign Relations3
- Ajtony, Árpád2
- Balogh, Eva S.2