- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)33
- Bütow, Tobias1
- Csákó, Mihály1
- Kautsky, Karl1
- Király, Béla1
- Nóvé, Béla1
- Petry, Ludwig1
- Radio Free Europe/Radio Liberty, Inc - Research Institute1
- Samizdat Archives1
- Samizdat Archives of Radio Free Europe1
- Spiegel, Tilly1
- Szekfű, András1
- de Héderváry, Claire1