Columbia subject headings:
Explorers--Pacific Ocean--History.
Explorers--Spain--History.
Pacific Coast (Central America)--Discovery and exploration--Spanish.
Pacific Coast (Mexico)--Discovery and exploration--Spanish.
Pacific Coast (South America)--Discovery and exploration--Spanish.
Pacific Ocean--Discovery and exploration--Spanish.
Spain--Colonies--America--Defenses--History.
Harvard subject headings:
Explorers--Pacific Ocean--History.
Explorers--Spain--History.
Pacific Area--Defenses--History.
Pacific Area--History.
Pacific Coast (Central America)--Discovery and exploration--Spanish.
Pacific Coast (Mexico)--Discovery and exploration--Spanish.
Pacific Coast (South America)--Discovery and exploration--Spanish.
Pacific Ocean--Discovery and exploration--Spanish.
Spain--Colonies--Defenses--America--History.
Princeton subject headings:
Pacific Area--History.
Pacific Ocean--Discovery and exploration--Spanish.