Columbia subject headings:
Composers--Italy--Correspondence.
Monteverdi, Claudio, 1567-1643.
Harvard subject headings:
Composers--Italy--Correspondence
Monteverdi, Claudio, 1567-1643--Correspondence.
Monteverdi, Claudio, 1567-1643.
Princeton subject headings:
Composers--Italy--Correspondence.
Monteverdi, Claudio, 1567-1643. Correspondence.