Columbia subject headings:
Carlota, Empress, consort of Maximilian, Emperor of Mexico, 1840-1927--Drama.
Harvard subject headings:
Carlota, Empress, consort of Maximilian, Emperor of Mexico, 1840-1927--Drama.
Princeton subject headings:
Carlota, Empress, consort of Maximilian, Emperor of Mexico, 1840-1927--Drama.
Drama.