Columbia subject headings:
Black people--Colonization--Tropics.
Free Black people.
Race relations--History--18th century.
Race relations--History--19th century.
Slaves--Emancipation.
Tropics--Colonization.
Harvard subject headings:
Liberty--North America.
Tropics--Colonization.
Princeton subject headings:
Black people--North America.
Liberty.
Social control--North America.