Columbia subject headings:
Brazil--Foreign relations--1822-1889.
Brazil--Foreign relations--Great Britain.
Brazil--History--Empire, 1822-1889.
Great Britain--Foreign relations--Brazil.
Harvard subject headings:
Brazil--Boundaries--Guyana.
Brazil--History--Empire, 1822-1889.
British--Guyana--Pirara--History--19th century.
Great Britain--History--Victoria, 1837-1901
Guyana--Boundaries--Brazil.
Pirara (Guyana)--History.
Princeton subject headings:
Brazil--Boundaries--Guyana.
Brazil--History--Empire, 1822-1889.
British--Guyana--Pirara--History--19th century.
Great Britain--History--Victoria, 1837-1901.
Guyana--Boundaries--Brazil.
Pirara (Guyana)--History.