Struble, John Warthen. “The Concord Sonata of Charles E. Ives: A Reference for Pianists and Scholars.” M.A. thesis, University of California at San Diego, 1978.
Nelson, Mark D. “Beyond Mimesis: Transcendentalism and Processes of Analogy in Charles Ives’ ‘The Fourth of July.’” Perspectives of New Music 22, Nos. 1-2 (1984): 353.