Columbia subject headings:
Authors, Cuban--20th century--Correspondence.
Authors, Mexican--20th century--Correspondence.
Reyes, Alfonso, 1889-1959--Correspondence.
Harvard subject headings:
Authors, Mexican--20th century--Correspondence
Reyes, Alfonso, 1889-1959--Correspondence.
Princeton subject headings:
Authors, Cuban--20th century--Correspondence.
Authors, Mexican--20th century--Correspondence.
Reyes, Alfonso, 1889-1959--Correspondence.