Columbia subject headings:
Brazil--History--Empire, 1822-1889.
Caxias, Luís Alves de Lima e Silva, Duque de, 1803-1880.
Harvard subject headings:
Brazil--History--Empire, 1822-1889.
Caxias, Luís Alves de Lima e Silva, Duque de, 1803-1880.
Princeton subject headings: