Columbia subject headings:
Explorers--America--Biography.
Explorers--Spain--Biography.
Núñez Cabeza de Vaca, Alvar, active 16th century.
Harvard subject headings:
America--Discovery and exploration--Spanish.
Explorers--America--Biography
Explorers--Spain--Biography
Núñez Cabeza de Vaca, Alvar, active 16th century.
Princeton subject headings:
Núñez Cabeza de Vaca, Alvar, active 16th century.