Subject
- Revolutionaries13
- Children12
- Intellectual life12
- Manners and customs12
- Russians12
- Spy stories12
- Foreign relations11
- Intelligence officers11
- Man-woman relationships11
- Murder11
- Russian literature11
- Revolution (Soviet Union : 1917-1921)10
- Spies10
- Stalin, Joseph, 1878-195310
- Heads of state9
- Soldiers9
- Cold War8
- Family8
- Immigrants8
- Investigation8