- Miłosz, Czesław2
- Pallai, Péter2
- Radio Free Europe/Radio Liberty, Inc - Research Institute2
- Alfred A. Reisch1
- Bieńkowski, Władysław1
- British Broadcasting Corporation, Written Archive Centre1
- Busza, Andrzej1
- Free Europe Committee, Inc1
- International Helsinki Federation for Human Rights1
- Kalinowski, Franciszek1
- Koshelivets', Ivan1
- Maciszewski, Jarema1
- Open Media Research Institute1
- Piszczkowski, Tadeusz1
- Polish Unit of RFE/RL Research Institute; RFE/RL RI1
- Preiss, Paulina1
- Raina, Peter1
- Soviet Red Archives1
- Wierzyński, Kazimierz1
- Zahorski, Witold1