Moore, Mary Carr - history and theory texts Cowell, Henry. American Composers on American Music: A Symposium. Stanford, CA: Stanford University Press, 1933. (reprint - New York: Frederick Ungar Publishing Co., 1962.) Hughes, Rupert. American Composers: A Study of the Music... Boston: Page Co., 1914. Johnson, H. Earle. Operas on American Subjects. New York: Coleman-Ross Co., 1964. Levy, Alan Howard. Musical Nationalism: American Composers' Search for Identity. Westport, Conn.: Greenwood Press, 1983.