Columbia subject headings:
Harvard subject headings:
Diplomats--Mexico--Biography.
Mexico--Foreign relations--United States.
Mexico--Politics and government--1861-1867
Mexico--Politics and government--1867-1910
Politicians--Mexico--Biography
Romero, Matías, 1837-1898.
United States--Foreign relations--Mexico.
Princeton subject headings:
Mexico--Politics and government--1810-
Romero, Matías, 1837-1898.