Columbia subject headings:
Harvard subject headings:
Maximilian, Emperor of Mexico, 1832-1867--Correspondence.
Mexico--Description and travel.
Mexico--History--19th century--Sources.
Mexico--Politics and government
Princeton subject headings:
Emperors--Mexico--Travel--Mexico--History--Chronology.
Maximilian, Emperor of Mexico, 1832-1867.
Mexico--Description and travel.
Press--Mexico--History--19th century.