- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)3
- Pallai, Péter2
- Radio Free Europe/Radio Liberty, Inc - Research Institute2
- Alfred A. Reisch1
- British Broadcasting Corporation, Written Archive Centre1
- Cummings, Tanja1
- Demszky, Gábor1
- Dobrowolski, Irek1
- Drygas, Maciej1
- Fekete Doboz Alapítvány1
- Free Europe Committee, Inc1
- Hersonski, Yael1
- International Helsinki Federation for Human Rights1
- Jóźwiak-Rodan, Paweł .1
- Kudła, Mateusz1
- Leszek, Dawid1
- Network Women's Program1
- Open Society Archives at Central European University1
- Polish Unit of RFE/RL Research Institute; RFE/RL RI1
- RFE Polish Underground Publications Unit1