Columbia subject headings:
Central America--Foreign relations--United States.
Central America--Politics and government--1821-1951.
United States--Foreign relations--1945-1953.
United States--Foreign relations--Central America.
Harvard subject headings:
Central America--Foreign relations--United States.
Central America--Politics and government--1821-1951.
United States--Foreign relations--1945-1953.
United States--Foreign relations--Central America.
Princeton subject headings:
Central America--Foreign relations--United States.
Central America--Politics and government--1821-1951.
United States--Foreign relations--1945-1953.
United States--Foreign relations--Central America.