Columbia subject headings:
Anti-communist movements--United States--History.
Communism--United States--History.
Internal security--United States--History--20th century.
McCarthy, Joseph, 1908-1957.
Subversive activities--United States--History--20th century.
United States--Politics and government--1945-1953.
Harvard subject headings:
Anti-communist movements--United States--History
Anti-communist movements--United States--History--Sources.
Communism--United States--History
Internal security--United States--History--20th century
McCarthy, Joseph, 1908-1957.
Subversive activities--United States--History--20th century
United States--Politics and government--1945-1953.
Princeton subject headings:
Anti-communist movements--United States--History--Sources.
Anti-communist movements--United States--History.
Communism--United States--History.
Internal security--United States--History--20th century.
McCarthy, Joseph, 1908-1957.
Subversive activities--United States--History--20th century.