Columbia subject headings:
Communism--United States--1917-
Hysteria (Social psychology)--Case studies.
Subversive activities--United States.
United States--Economic conditions--1918-1945.
Harvard subject headings:
Communism--United States
Hysteria (Social psychology)--Case studies.
Subversive activities--United States
United States--Economic conditions--1918-1945.
Princeton subject headings: