- Pallai, Péter2
- Radio Free Europe/Radio Liberty, Inc - Research Institute2
- Alfred A. Reisch1
- British Broadcasting Corporation, Written Archive Centre1
- Free Europe Committee, Inc1
- Ivanov, I.1
- Jasienica, Paweł1
- Malak, Henry M.1
- Miedzińska, Janina1
- Mękarski, Stefan1
- Open Media Research Institute1
- Polish Unit of RFE/RL Research Institute; RFE/RL RI1
- Slesicki, Wladyslaw1
- Soviet Red Archives1
- Stawar, Andrzej1
- Terts, Abram1
- Wyszyński, Stefan1
- Zaremba, Paweł1