Columbia subject headings:
Harvard subject headings:
Subversive activities--United States--History--Miscellanea.
Treason--United States--History--Miscellanea.
United States--Politics and government--Miscellanea.
Princeton subject headings:
Subversive activities--United States--History--Miscellanea.
Treason--United States--History--Miscellanea.
Trivia and miscellanea.
United States--Politics and government--Miscellanea.