Columbia subject headings:
Pacific Area--Discovery and exploration.
Pacific Area--History--18th century.
Pacific Ocean--Discovery and exploration--Spanish.
Harvard subject headings:
Pacific Area--Discovery and exploration.
Pacific Area--History--18th century.
Pacific Ocean--Discovery and exploration--Spanish.
Princeton subject headings:
Pacific Area--Discovery and exploration.
Pacific Area--History--18th century.
Pacific Ocean--Discovery and exploration--Spanish.