People of the Revolution and the USSR
- Feliks Yakovlevich Kon Феликс Яковлевич Кон From Warsaw boy patriot to Comintern old revolutionary: the Pole who returned in the sealed train
- Iosif Stanislavovich Unshlikht Иосиф Станиславович Уншлихт From Cheka deputy to civil aviation: the revolution's all-weather organizer
- Sofia Sigizmundovna Dzerzhinskaya Софья Сигизмундовна Дзержинская Polish Social Democrat who forged an independent revolutionary path from the SDKPiL underground to the Comintern
- Bolesław Bierut Bolesław Bierut Stalin's most trusted East European proxy, architect of Poland's Stalinist system and guardian of the Oder–Neisse border
- Ignace Stanislavovich Reiss Игнатий Станиславович Рейсс Soviet illegal who broke publicly with Stalin and was murdered by the NKVD
- Aleksander Zawadzki Aleksander Zawadzki A communist leader who helped shape postwar Poland's state
- Jakub Berman Jakub Berman An architect of Stalinist power in Poland
- Władysław Gomułka Władysław Gomułka The national communist who returned in the Polish October of 1956 to test a 'Polish road to socialism'
- Edward Mieczysław Ochab Edward Mieczysław Ochab The transitional First Secretary of 1956 who turned Khrushchev's Secret Speech into a mass document and then yielded power to Gomułka
- Stefan Staszewski Stefan Staszewski The PZPR Warsaw first secretary whose unauthorized print run of 15,000 copies broke Khrushchev's Secret Speech out of party control
- Isaac Deutscher Isaac Deutscher Marxist historian of Trotsky's definitive biography, who coined the 'non-Jewish Jew'