Columbia subject headings:
Harvard subject headings:
Florida--Commerce--History--Spanish colony, 1565-1763.
Saint Augustine (Fla.)--Antiquities.
Saint Augustine (Fla.)--Commerce.
Shipwrecks--Florida
Underwater archaeology--Florida.
Princeton subject headings:
Archaeology and history--Florida.
Florida--Antiquities.
Saint Augustine (Fla.)--Antiquities.
Spain--Colonies--Commerce.