Title: Na sluzhbi͡e︡ Cheka i Kominterna
Subjects: Russian S.F.S.R., Russian S.F.S.R. Chrezvychaĭnai︠a︡ komissii︠a︡ po borʹbe s kontr-revoli︠u︡t︠s︡ieĭ i sabotazhem, Soviet Espionage, Soviet Union, Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie, Russian S.F.S.R. Chrezvychaĭnai͡a komissii͡a po borʹbe s kontr-revoli͡ut͡sieĭ i sabotazhem