Ormandy, Eugene, David Ewen and F. Warren O’Reilly. Letters. “Correspondence: with Eugene Ormandy, 1973,” 1973, Eugene Ormandy Papers, Kislak Center for Special Collection, Rare Books and Manuscripts, University of Pennsylvania, Philadelphia, Pennsylvania.

Crain, Timothy Mark. “Rhythm and form in Ives's Scherzo (Over the pavements).” M.M. thesis, University of Alabama, 1995.

Bardi, Aloma. Essays Before a Sonata [Prima della sonata]. Translated by Aloma Bardi. Venice, Italy: Marsilio Editori, 1997.

Stokowski, Leopold and Brooks Shepard. Lettters. “Correspondence with Leopold Stokowski, 1963-1964,” 1963-1964, Edwin A. Fleisher Music Collection, Irving S. Gilmore Music Library, Yale University, New Haven, Connecticut.

MacClendon, James W. “Expanding the Theory: Charles Edward Ives—Theologian in Music.” In Biography as theology: how life stories can remake today's theology. Eugene, OR: Wipf and Stock Publishers, 2002.

Sly, Caroline Ware. “The language of Ives's solo songs.” M.A. thesis, Smith College, 1970.

Wiens, Carl K. “Structural organization in selected songs from Charles Ives's 114 songs.” M.A. thesis, McGill University, 1992.

McCalla, James. “Structural and harmonic innovations in the music of Schoenberg, Stravinsky and Ives prior to 1915.” M.M. thesis, New England Conservatory of Music, 1973.

Mehl, Kenneth B. “A stylistic analysis and comparison of four settings of Psalm 150: Franck, Bruckner, Ives and Hanson.” M.M. thesis, Southern Illinois University Edwardsville, 1974.

Davies, Hilary W. "The correlation between source and style in the music of Ives.” Ph.D. diss., University of Wales, 1987.