Columbia subject headings:
Black people--Brazil--History--19th century.
Rio de Janeiro (Brazil)--Ethnic relations.
Slavery--Brazil--History--19th century.
Harvard subject headings:
Slavery--Brazil--Rio de Janeiro--History.
Slaves--Emancipation--Brazil--Rio de Janeiro--History.
Princeton subject headings:
Black people--Brazil--History--19th century.
Rio de Janeiro (Brazil)--Ethnic relations.
Slavery--Brazil--History--19th century.