- London, Artur Gerard1
- Lysakowski, Richard1
- Micewski, Andrzej1
- Miłosz, Czesław1
- Monitoring Unit1
- Nowakowski, Tadeusz1
- Olesiak, Henryk1
- Open Media Research Institute1
- Orłoś, Kazimierz1
- Polish Unit of RFE/RL Research Institute; RFE/RL RI1
- RFE Polish Underground Publications Unit1
- Rosenbusch, Adam1
- Rymkiewicz, Jarosław Marek1
- Soviet Red Archives1
- Świątek-Horyń, Romuald1