Columbia subject headings:
Columbus (N.M.)--History.
Mexico--Foreign relations--United States.
United States--Foreign relations--Mexico.
Villa, Pancho, 1878-1923.
Harvard subject headings:
Columbus (N.M.)--History.
Mexico--Foreign relations--United States.
United States--Foreign relations--Mexico.
Villa, Pancho, 1878-1923
Princeton subject headings:
Columbus (N.M.)--History.
Mexico--Foreign relations--United States.
United States--Foreign relations--Mexico.
Villa, Pancho, 1878-1923.