Columbia subject headings:
America--Discovery and exploration--Spanish.
Columbus, Christopher.
Explorers--America--Biography.
Explorers--Spain--Biography.
Harvard subject headings:
America--Discovery and exploration--Spanish.
Columbus, Christopher
Explorers--America--Biography
Explorers--Spain--Biography
Princeton subject headings:
America--Discovery and exploration--Spanish.
Columbus, Christopher.
Explorers--America--Biography.
Explorers--Spain--Biography.