Columbia subject headings:
Mexico--Foreign relations--United States.
Mexico--History--1910-1946.
Pershing, John J. (John Joseph), 1860-1948.
United States--Foreign relations--Mexico.
Villa, Pancho, 1878-1923.
Harvard subject headings:
Biographies.
Mexico--Foreign relations--United States.
Mexico--History--1910-1946.
Pershing, John J. (John Joseph), 1860-1948.
United States--Foreign relations--Mexico.
Villa, Pancho, 1878-1923
Princeton subject headings:
Mexico--Foreign relations--United States.
Mexico--History--1910-1946.
Pershing, John J. (John Joseph), 1860-1948.
United States--Foreign relations--Mexico.
Villa, Pancho, 1878-1923.