Columbia subject headings:
Havana (Cuba)--Commerce--History--18th century.
Havana (Cuba)--History.
Louisbourg (N.S.)--Commerce--History--18th century.
Louisbourg (N.S.)--History.
Harvard subject headings:
Havana (Cuba)--Commerce--History--18th century.
Havana (Cuba)--History
Louisbourg (N.S.)--Commerce--History--18th century.
Louisbourg (N.S.)--History.
Princeton subject headings:
Havana (Cuba)--Commerce--History--18th century.
Havana (Cuba)--History.
Louisbourg (N.S.)--Commerce--History--18th century.
Louisbourg (N.S.)--History.