Anderson, David M. “The Boy’s World of Booth Tarkington.” Society for the Study of Midwestern Literature Newsletter 5 (1975): 35-42. Discussion of the settings of Penrod and Tarkington’s other novels.
Macaigne, Bernard. “From Tom Sawyer to Penrod: The Child in American Popular Literature, 1870-1910.” Revue Française d’Etudes Americaines 8, no. 17 (May, 1983): 319-331. Discussion of how children, especially boys, are represented in U.S. popular fiction of the late nineteenth and early twentieth century.
Sanders, Scott. Introduction to Penrod, by Booth Tarkington. Bloomington: Indiana University Press, 1985. Sheds light on the context in which the novel was written and published, as well as its place in literary history.
Sargent, Robert S., Jr. “Booth Tarkington and Penrod.” Enter Stage Right, June 14, 2004. An article on the author and his character.
“Tarkington on Penrod.” The New York Times, September 8, 1918. Contains Tarkington’s comments on the setting and character of the novel.