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Eiseman, David. “Charles Ives and the European Symphonic Tradition: A Historical Reappraisal.” Ph.D. diss., University of Illinois, 1972.

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de Leeuw, Reinbert. “Charles Ives, Zijn Muziek: Inleidung, Ives’ Gebruik van Muzikaal Materiaal.” [From J. Bernlef and Reinbert de Leeuw, Charles Ives.] Translated by Bertus Polman. Student Musicologists at Minnesota 6 (1975-76): 128-191.

Davidson, Colleen. “Winston Churchill and Charles Ives: The Progressive Experience in Literature and Song.” Student Musicologists at Minnesota 3 (1968-69): 168-94, and 4 (1970-71): 154-80.

Davidson, Audrey. “Transcendental Unity in the Works of Charles Ives.” American Quarterly 22 (Spring 1970): 35-44.

Cyr, Gordon. “Intervallic Structural Elements in Ives’ Fourth Symphony.” Perspectives of New Music 9/2 and 10/1 (1971): 291-303.