Columbia subject headings:
Mexican War, 1846-1848.
Mexico--Foreign relations--United States.
Mexico--History--1821-1861.
United States--Foreign relations--Mexico.
Harvard subject headings:
Mexican War, 1846-1848.
Mexico--Foreign relations--United States.
Mexico--History--1821-1861.
United States--Foreign relations--Mexico.
Princeton subject headings:
Mexican War, 1846-1848.
Mexico--Foreign relations--United States.
Mexico--History--1821-1861.
United States--Foreign relations--Mexico.