- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)12,784
- Radio Free Europe/Radio Liberty, Inc - Research Institute13
- Samizdat Archives12
- Soviet Red Archives9
- Bortstieber, Gertrud8
- Héderváry, Claire de8
- Kluge, Alexander8
- Samizdat Archives of Radio Free Europe8
- Kristl, Vlado7
- Lewytzkyj, Borys7
- Fricke, Karl Wilhelm4
- Leonhard, Wolfgang4
- Open Media Research Institute4
- Buber-Neumann, Margarete3
- Germany (West). Bundesministerium für Gesamtdeutsche Fragen3
- Hanák, Péter3
- Hegedüs, András3
- Sakharov, Andrei3
- Szekfű, András3
- Adenauer, Konrad2