Bell, Rudolph M. "1, Catherine." In Holy Anorexia, pp. 22-53. Chicago, Ill.: University of Chicago Press, 1985.

Contends that Catherine's persistent fasting was deeply invested with religious symbolism and in its development followed the major turning points of her life.

Falassi, Alessandro. "Catherine of Siena: Life, Death and Miracles." New York Folklore 11, Nos. 1-4 (1985): 109-33.

Discusses the life and thought of Catherine of Siena and describes the strong following she acquired after her death.

Noffke, Suzanne. Introduction to The Letters of St. Catherine of Siena, Volume 1, pp. 1-31. Binghamton, N.Y.: Medieval and Renaissance Texts and Studies, 1988.

Compares the existing collections, translations, and secondary scholarship of the letters of Catherine of Siena.

Ryley, M. Beresford. "Catherine of Siena: 1347-1380." In Queens of the Renaissance, pp. 1-52. London: Methuen & Co., 1907.

Argues that Catherine of Siena "represented a strain of feeling" that properly belongs to the Renaissance, although her life preceded that cultural period.