Columbia subject headings:
Brazil--History--1763-1822.
Brazil--History--Empire, 1822-1889.
Pedro II, Emperor of Brazil, 1825-1891.
Harvard subject headings:
Brazil--History--1763-1822.
Brazil--History--Empire, 1822-1889.
Pedro II, Emperor of Brazil, 1825-1891.
Princeton subject headings:
Brazil--History--19th century.
Pedro II, Emperor of Brazil, 1825-1891.