Columbia subject headings:
Communism--United States--1917-
Communist trials--United States.
Trials (Political crimes and offenses)--United States.
Harvard subject headings:
Communism--United States--1917-
Communist trials--United States.
Trials (Political crimes and offenses)--United States
Princeton subject headings:
Communism--United States.
Communist trials--United States.
Trials (Political crimes and offenses)--United States.