Bloom, Harold, ed. Sinclair Lewis. New York: Chelsea House Publishers, 1987.

Bucco, Martin, ed. Critical Essays on Sinclair Lewis. Boston: G.K. Hall & Co., 1986.

Dooley, David Joseph. The Art of Sinclair Lewis. Lincoln: University of Nebraska Press, 1967.

Hutchisson, James M. The Rise of Sinclair Lewis: 1920–1930. University Park: Pennsylvania State University Press, 1996.

Light, Martin. The Quixotic Vision of Sinclair Lewis. West Lafayette, Indiana: Purdue University Press, 1975.

Lundquist, James. Sinclair Lewis. New York: Frederick Ungar Publishing Co., 1973.

Sherman, Stuart P. The Significance of Sinclair Lewis. Folcroft, Pennsylvania: Folcroft Library Editions, 1973.

Smith, Harrison. Sinclair Lewis. New York: Harcourt and Brace, 1925.