Title: Communist activities among aliens and national groups
Subtitle: Hearings before the Subcommittee on Immigration and Naturalization of the Committee on the Judiciary, United States Senate, Eighty-first Congress, first session, on S. 1832, a bill to amend the Immigration act of October 16, 1918, as amended.
Subjects: Communism, Espionage
Places: United States
Time periods: 1917-