1. Ignatiev, Semyon: 1, 2
2. Il’ichev, Ivan: 1, 2, 3
3. informer: 1, 2, 3, 4, 5, 6, 7
4. INO (Foreign Intelligence): 1, 2
5. Inspectorate (SMERSH unit attached to an ACC): 1, 2, 3, 4, 5, 6, 7
6. intelligentsia: 1, 2, 3, 4, 5, 6, 7, 8
7. Internal Affairs Commissariat (NKVD): 1, 2, 3
8. interrogators: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17
9. investigation file: 1, 2, 3, 4, 5, 6, 7, 8
10. Ivanov, Vladimir: 1
11. Ivashutin, Pyotr: 1, 2, 3, 4, 5, 6
12. Izvestia: 1, 2, 3, 4, 5