- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)11
- Bieńkowski, Władysław2
- Blazynski, George1
- Brzezinski, Zbigniew1
- Ciołkosz, Adam1
- Cousseau, Frederic1
- Fast, Howard1
- Geller, Mikhail1
- Hirszowicz, Maria1
- Huk, Blandine1
- Kowalski, Artur1
- Kupiecki, Robert1
- Mackiewicz, Józef1
- Michnik, Adam1
- Nieciuński, Witold1
- Nowak, Leszek1
- Open Society Archives at Central European University1
- Pasikowski, Wlaadyslaw1
- Podgórski, Tadeusz1
- Preiss, Paulina1