Columbia subject headings:
Mexico--Politics and government--1821-1861.
Mexico--Politics and government--1861-1867.
Mexico--Politics and government--1867-1910.
Harvard subject headings:
Mexico--Politics and government--1821-1861
Mexico--Politics and government--1861-1867
Mexico--Politics and government--1867-1910
Princeton subject headings:
Mexico--Politics and government--1821-1861.
Mexico--Politics and government--1861-1867.
Mexico--Politics and government--1867-1910.