Columbia subject headings:
Ansermet, Ernest, 1883-1969--Correspondence.
Composers--Europe--Correspondence.
Conductors (Music)--Switzerland--Correspondence.
Harvard subject headings:
Ansermet, Ernest, 1883-1969--Correspondence.
Composers--Europe--Correspondence.
Conductors (Music)--Switzerland--Correspondence.
Princeton subject headings:
Ansermet, Ernest, 1883-1969--Correspondence.
Composers--Europe--Correspondence.
Conductors (Music)--Switzerland--Correspondence.