Columbia subject headings:
Harvard subject headings:
Creel, Reuben--Correspondence.
Juárez, Benito, 1806-1872--Correspondence.
Mexico--History--European intervention, 1861-1867.
Pyat, Félix, 1810-1889--Correspondence.
Princeton subject headings:
Chihuahua (Chihuahua, Mexico)--History--19th century.
Creel, Reuben--Knowledge--Mexico.
France--Politics and government--1848-1870.
Mexico--History--19th century--Chronology.
Mexico--History--European intervention, 1861-1867.
Pyat, Félix, 1810-1889. Carta a Juárez y a sus amigos.