- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)2,147
- Héderváry, Claire de380
- Pallai, Péter4
- Csákó, Mihály3
- Radio Free Europe/Radio Liberty, Inc - Research Institute3
- Balogh, Eva S.2
- Hanák, Péter2
- Hegedüs, András2
- Kovrig, Bennett2
- Nóvé, Béla2
- Pastor, Peter2
- Ajtony, Árpád1
- Barber, Noel1
- Bortstieber, Gertrud1
- British Broadcasting Corporation, Written Archive Centre1
- Copp, DeWitt S.1
- Fekete, Márton1
- Great Britain, Foreign and Commonwealth Office1
- Hanson, Philip1
- Haraszti, Miklós1