Columbia subject headings:
Harvard subject headings:
Presidents--United States--Election--History--20th century
Radio in politics--United States--History.
Television in politics--United States--History.
United States--Politics and government--1933-1945.
United States--Politics and government--1945-1989.
Princeton subject headings:
Presidents--United States--Election--History--20th century.
Radio in politics--United States--History--20th century.
Television in politics--United States--History--20th century.
United States--Politics and government--1933-1945.
United States--Politics and government--1945-1989.