- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)1,356
- Borowik, Włodzimierz2
- Hoffman, Jerzy2
- Karabasz, Kazimierz2
- Pallai, Péter2
- Radio Free Europe/Radio Liberty, Inc - Research Institute2
- Skórzewski, Edward2
- Ślesicki, Władysław2
- Alfred A. Reisch1
- Bednarczyk, Czesław1
- Bossak, Jerzy1
- Bridge, Ann1
- British Broadcasting Corporation, Written Archive Centre1
- Brock, Peter1
- Brzozowski, Andrzej1
- Brzozowski, Jarosław1
- Bujnowski, Józef1
- Free Europe Committee, Inc1
- Gombrowicz, Witold1
- Günther, Władysław1