- Bortstieber, Gertrud5
- Raizman, Yuli3
- Samizdat Archives3
- Geréb, Anna2
- Beliaev, V.1
- Communist International (Comintern)1
- Donskoy, Mark1
- Hanák, Péter1
- Hegedüs, András1
- Open Society Archives at Central European University1
- Pyriev, Ivan1
- Radio Free Europe/Radio Liberty, Inc - Research Institute1
- Room, Abram1
- Samizdat Archives of Radio Free Europe1
- Zarkhy, Aleksandr1