- Bortstieber, Gertrud5
- Samizdat Archives2
- Chiaureli, Mikhail1
- Communist International (Comintern)1
- Dovzhenko, Alexander1
- Eisenstein, Sergei1
- Gerasimov, Sergei1
- Ibárruri, Dolores1
- Ivanov, Aleksandr1
- Open Society Archives at Central European University1
- Penzlin, Eduard1
- Pyriev, Ivan1
- Roshal, Grigory1
- Samizdat Archives of Radio Free Europe1
- Yutkevich, Sergei1
- Zarkhy, Aleksandr1