Columbia subject headings:
Harvard subject headings:
Industries--America--History.
Slavery--America--History
Slavery--Haiti--History.
Sugar trade--America--History.
Sugar trade--Haiti--History.
Sugar--Manufacture and refining--America--History.
Princeton subject headings:
Slavery--West Indies--History.
Slaves--West Indies--Social conditions.
Sugar trade--West Indies--History.
Sugar workers--West Indies--History.
Sugarcane industry--West Indies--History.