- Radio Free Europe/Radio Liberty, Inc - Research Institute2
- Schiffer, Pál2
- Varga, László2
- Alfred A. Reisch1
- Analytic Research Department1
- Balogh, Eva S.1
- Balázs Béla Stúdió1
- Belarusfilm1
- Belügyminisztérium Központi Irattára1
- Bovet, Th1
- British Broadcasting Corporation, Written Archive Centre1
- Choury, Maurice1
- Czechoslovak Unit1
- Film Studio of the Hungarian Workers Militia1
- Fábry, Péter1
- Garaudy, Roger1
- Group Inconnu1
- Guérin, Alain1
- Historical Archives of the Hungarian State Security1
- Hungarian Institute for Public Opinion Research1