Columbia subject headings:
Mexico--History--1821-1861--Sources.
Mexico--History--European intervention, 1861-1867--Sources.
Harvard subject headings:
Mexico--History--1821-1861--Sources.
Mexico--History--European intervention, 1861-1867--Sources.
Márquez, Leonardo, 1820-1913.
Puebla de Zaragoza (Mexico)--Siege, 1863--Sources.
Princeton subject headings: