Columbia subject headings:
Alfaro, Eloy, 1842-1912.
Guayaquil (Ecuador)--Description and travel.
Intellectuals--Mexico.
Mexicali Valley (Mexico)--Description and travel.
Mexican-American Border Region--Social conditions.
Mexicans--Attitudes.
Panama--Description and travel.
Pareja y Díez Canseco, Alfredo, 1908-1993.
Peru--Description and travel.
Revueltas, José, 1914-1976.
Harvard subject headings:
Revueltas, José, 1914-1976
Revueltas, José, 1914-1976--Correspondence.
Princeton subject headings: