1. Arnold, Cecil Benjamin. 1986. “War, Peace, and the Apocalypse in Art Music Since World War II.” Ph.D. diss., University of Kentucky.
2. Sets, Scales, and Symmetries: The Pitch-Structural Basis of George Crumb's "Makrokosmos" I and II
3. Models of Octatonic and Whole-Tone Interaction: George Crumb and His Predecessors
4. Blight, David. 2017. “Yale Open Courses, HIST 119: The Civil War and Reconstruction Era, 1845–1877.” Episode 26. Podcast audio, beginning–1:18. https://oyc.yale.edu/history/hist-119