Columbia subject headings:
Padre Island (Tex.)--Antiquities.
Shipwrecks--Texas--Padre Island.
Texas--Antiquities.
Treasure troves--Texas--Padre Island.
Underwater archaeology--Texas--Padre Island.
Harvard subject headings:
Padre Island (Tex.)--Antiquities.
Shipwrecks--Texas--Padre Island.
Texas--Antiquities
Treasure-troves--Texas--Padre Island.
Underwater archaeology--Texas--Padre Island.
Princeton subject headings:
Padre Island (Tex.)--Antiquities.
Shipwrecks--Texas--Padre Island.
Texas--Antiquities.
Treasure troves--Texas--Padre Island.
Underwater archaeology--Texas--Padre Island.