Orrey, Leslie. Programme Music: A Brief Survey from the Sixteenth Century to the Present Day. London, United Kingdom: Davis-Poynter, 1975.

O'Reilly, F. Warren. “Charles Ives: American Patriot, Prophetic Genius, Mod-ern Non-Conformist.” In South Florida's Historic Ives Festival, 1974-1976, 47-49. Coral Gables, FL: University of Miami, 1976.

Norris, Christopher. “American Pioneer.” Music and Musicians 23/2 (Octo-ber 1974): 36-40.

Kramer, Jonathan D. “Postmodern Concepts of Musical Time.” Indiana Theory Review 17, no. 2 (1996): 21-61.

Josephson, Nors S. “The Initial Sketches for Ives’s ‘St. Gaudens in Boston Common’.” Soundings: A Music Journal 12 (1984-1985): 46-63.

Lambert, J. Philip. Journal of Musicological Research 1, no. 4 (1991): 237-262.

Nicholls, David. “In Re Con Moto Et Al: Experimentalism in the Works of Charles Ives (1874-1954).” In American Experimental Music: 1890-1940, 5-88. Cambridge, United Kingdom: Cambridge University Press, 1990.

Nicholls, David. “Unanswerable Questions/Questionable Answers.” Music and Utters 75/2 (May 1994): 246-252.

“Musical Whitman.” Newsweek 43, May 31, 1954, 78.

Mumelter, Martin. “Zu den Violinsonaten von Charles Ives.” Osterreichische Musikzeitschrift 48/3-4 (March-April 1993): 147-151.