Columbia subject headings:
Harvard subject headings:
Brazil--History--1763-1822--Sources.
Marrocos, Luís Joaquim dos Santos, 1781-1838--Correspondence.
Marrocos, Luís Joaquim dos Santos, 1781-1838--Travel--Brazil--Rio de Janeiro.
Portugal--History--1789-1900--Sources.
Princeton subject headings:
Brazil--History--Empire, 1822-1889.
Marrocos, Luís Joaquim dos Santos, 1781-1838--Correspondence.
Portugal--History--1789-1900.