- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)552
- Open Media Research Institute9
- Monitoring Unit6
- Soviet Red Archives3
- Geréb, Anna2
- Arkus, Lyubov1
- Arlauskas, Olga1
- Bortstieber, Gertrud1
- Bukojemski, Michał1
- Communist International (Comintern)1
- Csákó, Mihály1
- Gerchikov, Vladimir1
- Greytak, Sharon1
- Gutman, Alexander1
- Hanák, Péter1
- Hartmann, Vivien1
- Information Services Department1
- Khoreva, Elena1
- Khrenova, Darya1
- Kossakovskii, Viktor1