Columbia subject headings:
Harvard subject headings:
Maximilian, Emperor of Mexico, 1832-1867--Congresses.
Mexico--History--European intervention, 1861-1867--Congresses.
Mexico--Kings and rulers--Biography--Congresses.
Princeton subject headings:
Maximilian, Emperor of Mexico, 1832-1867--Congresses.
Mexico--History--European intervention, 1861-1867--Congresses.
Mexico--Kings and rulers--Biography--Congresses.