- Radio Free Europe/Radio Liberty, Inc - Research Institute9
- Bortstieber, Gertrud4
- Pallai, Péter4
- Hanák, Péter3
- Samizdat Archives3
- Nóvé, Béla2
- American Committee for Cultural Freedom1
- Balkan Section1
- Balogh, Eva S.1
- Berman, Harold J.1
- Betts, Reginald Robert1
- British Broadcasting Corporation, Written Archive Centre1
- Brykin, A. T.1
- Bulgarian Unit1
- Cao, Ming1
- Churchill, Winston1
- Clay, Lucius D.1
- Communist International (Comintern)1
- Crossman, R. H. S.1
- De Rusett, Alan1