Harman, Alec, Anthony Milner and Wilfrid Mellers. Man and His Music: The Story of Musical Experience in the West. New York, NY: Ox-ford University Press, 1962.
Mellers, Wilfrid H. “Postlude: Charles Ives and the New World.” In Romanticism and the 20th Century (from 1800), 218-225. Fair Lawn, NJ: Essential Books, 1957.
Hanson, Howard. Music in Contemporary American Civilization. Montgomery Lectures on Contemporary Civilization. Lincoln, NE: University of Nebraska, 1951.