Title: Secrets of the O.G.P.U
Subjects: Police, Russian S.F.S.R., Russian S.F.S.R. Chrezvychaĭnai͡a komissii͡a po borʹbe s kontr-revoli͡ut͡sieĭ i sabotazhem, Secret service, Soviet Union, Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie
Places: Soviet Union