- Radio Free Europe/Radio Liberty Research Institute (RFE/RL Research Institute)27
- Lennauchfilm3
- Sebag Montefiore, Simon2
- Aleksievich, Svetlana1
- Applebaum, Anne1
- Brendon, Piers1
- Conquest, Robert1
- Dunham, Vera Sandomirsky1
- Germany (West). Auswärtiges Amt1
- Gotʹe, IU. V.1
- Harrison, Hope Millard1
- Kotkin, Stephen1
- Marks, Steven G.1
- Rayfield, Donald1
- Roth-Ey, Kristin1
- Shub, Boris1
- Van der Post, Laurens1
- Vertov, Dziga1