Columbia subject headings:
Caribbean Area--Commerce--History.
Shipping--Caribbean Area--History.
Smuggling--Caribbean Area--History.
Harvard subject headings:
Caribbean Area--Commerce--History.
Navigation--Caribbean Sea--History.
Underwater archaeology--Caribbean Area.
Underwater archaeology--Mexico.
Princeton subject headings:
Caribbean Area--Commerce--History.
Navigation--Caribbean Sea--History.
Underwater archaeology--Caribbean Area.
Underwater archaeology--Mexico.