- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)88
- Open Society Archives at Central European University38
- Samizdat Archives22
- Samizdat Archives of Radio Free Europe10
- Open Media Research Institute9
- Radio Free Europe/Radio Liberty, Inc - Research Institute6
- Fekete Doboz Alapítvány5
- Nóvé, Béla5
- Bortstieber, Gertrud4
- Grimsted, Patricia Kennedy4
- Lanzmann, Claude4
- Pallai, Péter4
- Papp, Gábor Zsigmond4
- Radio Free Europe and Radio Liberty, Inc.4
- Vajda, Júlia4
- Aizenberg, Alexander3
- Millar, Laura3
- Péter Forgács3
- Roper, Michael3
- Soviet Red Archives3