Columbia subject headings:
Authors, French--20th century--Correspondence.
Bloch, Ernest, 1880-1959--Correspondence.
Composers--Correspondence.
Rolland, Romain, 1866-1944--Correspondence.
Harvard subject headings:
Authors, French--20th century--Correspondence
Bloch, Ernest, 1880-1959--Correspondence.
Composers--Correspondence
Rolland, Romain, 1866-1944--Correspondence.
Princeton subject headings: