- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)4
- Pallai, Péter3
- Héderváry, Claire de2
- Taylor, A. J. P.2
- Baldoli, Claudia1
- Barnes, James Strachey1
- Blinkhorn, Martin1
- Bogumił, Zuzanna1
- British Broadcasting Corporation, Written Archive Centre1
- Bíró, András1
- Chadwick, Owen1
- Conway, Martin1
- Cuevas, Efrén1
- Doherty, Martin A.1
- Frydman,Jean1
- Great Britain, Foreign and Commonwealth Office1
- Grossman, Vasilii1
- Housden, Martyn1
- J. Rieber, Alfred1
- Jong, L. de1