Columbia subject headings:
Harvard subject headings:
García Icazbalceta, Joaquín, 1825-1894--Correspondence.
León, Nicolás, 1859-1929. Correspondence.
Princeton subject headings:
García Icazbalceta, Joaquín, 1825-1894--Correspondence.
Historians--Mexico--Correspondence.
Indianists--Mexico--Correspondence.
León, Nicolás, 1859-1929. Correspondence.