Columbia subject headings:
France--Foreign relations--Mexico.
Mexico--Foreign relations--France.
Mexico--History--1821-1861--Sources.
Mexico--History--European intervention, 1861-1867--Sources.
Harvard subject headings:
France--Foreign relations--Mexico.
Mexico--Foreign relations--France.
Mexico--History--1821-1861--Sources
Mexico--History--European intervention, 1861-1867--Sources.
Princeton subject headings:
France--Foreign relations--Mexico.
Mexico--Foreign relations--France.
Mexico--History--1821-1861--Sources.
Mexico--History--European intervention, 1861-1867--Sources.