- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)8,152
- Radio Free Europe/Radio Liberty, Inc - Research Institute22
- Samizdat Archives20
- Csákó, Mihály15
- Đorđević, Aleksandar13
- Karanović, Srđan10
- Soviet Red Archives10
- Medvedev, Roy Aleksandrovich8
- Nóvé, Béla8
- Polgári Védelem Országos Parancsnokság8
- Visnews8
- Tsentralnaia Studiia Dokumentalnykh Filmov (TsSDF)7
- UPTIN7
- Hegedüs, András6
- Samizdat Archives of Radio Free Europe6
- Dudko, Dmitrii5
- Leningradskaia Studiia Dokumentalnykh Filmov (LSDF)5
- Open Media Research Institute5
- Ukrainskaia Studiia Khronikalno-dokumentalnykh Filmov5
- Broomfield, Nick4