- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)154
- Héderváry, Claire de20
- Samizdat Archives6
- Samizdat Archives of Radio Free Europe6
- Machcewicz, Paweł2
- Pohle, Heinz2
- Radio Free Europe/Radio Liberty, Inc - Research Institute2
- Soviet Red Archives2
- Syberberg, Hans-Jürgen2
- BBC1
- Balkan Section1
- Boelcke, Willi A.1
- Broniewski, Stanisław1
- Browne, Donald R.1
- Crews, Albert R.1
- Dunbar, Janet1
- Galle, Petra1
- Geller, Valerie1
- Great Britain. Central Office of Information. Reference Division1
- Group Inconnu1