- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)144
- Radio Free Europe/Radio Liberty, Inc - Research Institute5
- Bartoszewski, Wɫadysɫaw1
- Bethell, Nicholas1
- Bieńkowski, Władysław1
- Csákó, Mihály1
- Kalinowski, Franciszek1
- Maciszewski, Jarema1
- Modzelewski, Karol1
- Piszczkowski, Tadeusz1
- Polish Unit of RFE/RL Research Institute; RFE/RL RI1
- Preiss, Paulina1