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Bauer, Marion. <i>20th Century Music: How It Developed, How to Listen to It</i>, 278. New York, New York: Da Capo Press, 1978, 278.
Kaufman, Helen L. “Charles Ives.” In <i>The Story of One Hundred Great Composers</i>, 73. New York, NY: Grosset & Dunlap, 1957.