Schuttler, George William, William Gillette, Actor and Director (An unpublished thesis submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Speech Communication in the Graduate College of the University of Illinois at Urbana–Champaign, 1975), pg. 97; Schuttler, Georg William, (1983) "William Gillette: Marathon Actor and Playwright," The Journal of Popular Culture, Vol. 17, Issue 3, Winter 1983, pp. 115–29. doi:10.1111/j.0022-3840.1983.1703_115.x, pp. 124–125.