- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)4,867
- Samizdat Archives25
- Radio Free Europe/Radio Liberty, Inc - Research Institute19
- Csákó, Mihály15
- Tsentralnaia Studiia Dokumentalnykh Filmov (TsSDF)12
- Soviet Red Archives11
- Samizdat Archives of Radio Free Europe10
- Nóvé, Béla8
- Open Media Research Institute8
- Gorbachev, Mikhail Sergeevich7
- Philipp, Tibor7
- Fekete Doboz Alapítvány6
- Jakab, Lajos6
- Monitoring Unit6
- Pastor, Peter6
- Delannoy, Gilles5
- Geller, Mikhail5
- Gábor Magos5
- Hegedüs, András5
- Lennauchfilm5