Columbia subject headings:
Harvard subject headings:
Authors, French--20th century--Correspondence
Blum, Léon, 1872-1950--Correspondence.
Blum, Léon, 1872-1950. Correspondence.
Gide, André, 1869-1951. Correspondence
Gide, André, 1869-1951. Correspondence.
Princeton subject headings:
Authors, French--20th century--Correspondence.
Blum, Léon, 1872-1950. Correspondence.
Gide, André, 1869-1951. Correspondence.