- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)68
- Samizdat Archives5
- Samizdat Archives of Radio Free Europe4
- Shlapentokh, Vladimir2
- Afanasʹev, IU. N.1
- Applebaum, Anne1
- Armstrong, Campbell1
- Chalidze, Valerii1
- Childs, David1
- Connor, Walter1
- Conquest, Robert1
- Goldfarb, Jeffrey C.1
- Goldovskaia, Marina1
- Hill, Kent Richmond1
- Kaufmann, William W.1
- Khrushchev, Nikita Sergeevich1
- Laqueur, Walter1
- Open Society Archives at Central European University1
- Ptashuk, Mikhail1
- Radio Free Europe/Radio Liberty, Inc - Research Institute1