- Bortstieber, Gertrud5
- Radio Free Europe/Radio Liberty, Inc - Research Institute5
- Samizdat Archives3
- Geréb, Anna2
- Hanák, Péter2
- Aleksandrov, Grigori1
- Chiaureli, Mikhail1
- Communist International (Comintern)1
- Hegedüs, András1
- Ivanov, Aleksandr1
- Open Society Archives at Central European University1
- Petrov, Vladimir1
- Pyriev, Ivan1
- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)1
- Razumovskii, Alexander1
- Romanian Unit1
- Roshal, Grigory1
- Samizdat Archives of Radio Free Europe1