Columbia subject headings:
Ives, Charles, 1874-1954--Congresses.
Music--United States--20th century--Congresses.
Harvard subject headings:
Ives, Charles, 1874-1954--Congresses.
Music--20th century--History and criticism--Congresses.
Music--United States--20th century--Congresses.
Princeton subject headings:
Ives, Charles, 1874-1954--Criticism and interpretation--Congresses.
Music--United States--20th century--History and criticism--Congresses.