- Bortstieber, Gertrud5
- Samizdat Archives3
- Geréb, Anna2
- Hanák, Péter2
- Radio Free Europe/Radio Liberty, Inc - Research Institute2
- Aldanov, Mark Aleksandrovich1
- Arsen'ev, Nikolai Sergeevich1
- Communist International (Comintern)1
- Hegedüs, András1
- Heimbürger, Boris1
- Open Society Archives at Central European University1
- Romanian Unit1
- Samizdat Archives of Radio Free Europe1
- Sedykh, Andrei1
- Stolpner, Alexander1