Columbia subject headings:
Shipwrecks--Virginia--Yorktown Region.
Underwater archaeology--Virginia--Yorktown Region.
Virginia--Antiquities.
Yorktown (Va.)--History--Siege, 1781.
Yorktown Region (Va.)--Antiquities.
Harvard subject headings:
Shipwrecks--Virginia--Yorktown Region.
Underwater archaeology--Virginia--Yorktown Region.
Virginia--Antiquities.
Yorktown (Va.)--History--Siege, 1781.
Yorktown Region (Va.)--Antiquities.
Princeton subject headings:
Shipwrecks--Virginia--Yorktown Region.
Underwater archaeology--Virginia--Yorktown Region.
Virginia--Antiquities.
Yorktown (Va.)--History--Siege, 1781.
Yorktown Region (Va.)--Antiquities.