- Bortstieber, Gertrud5
- Samizdat Archives3
- Geréb, Anna2
- Bek-Nazarov, Amo1
- Chiaureli, Mikhail1
- Communist International (Comintern)1
- Donskoy, Mark1
- Ermler, Fridrikh1
- Hegedüs, András1
- Open Society Archives at Central European University1
- Orwell, George1
- Pyriev, Ivan1
- Raizman, Yuli1
- Room, Abram1
- Samizdat Archives of Radio Free Europe1
- Yutkevich, Sergei1
- Zarkhy, Aleksandr1