Columbia subject headings:
United States--History--20th century.
Harvard subject headings:
United States--Foreign relations--1945-
United States--History--20th century.
United States--Politics and government--1945-1989.
World War, 1939-1945--United States.
World politics--1945-
Princeton subject headings:
United States--Foreign relations--1945-.
United States--History--20th century.
United States--Politics and government--1945-.
World War, 1939-1945--Economic aspects--United States.
World politics--1945-1989.