Bucco, Martin, "Main Street": The Revolt of Carol Kennicott, Twayne, 1993.

One of the few book-length examinations of this novel, this study looks at its subject from a number of different angles. Most of the book is comprised of essays proposing different theoretical viewpoints.

Davies, Richard O., Main Street Blues: The Decline of SmallTown America, Ohio State University Press, 1998.

Davis only uses Lewis's novel as an inspiration and focuses most of his study on his own home town of Camden, Ohio. Still, the points that he makes about small towns in the twentieth century bring the novel's concerns into the present.

Light, Martin, The Quixotic Vision of Sinclair Lewis, Purdue University Press, 1975.

This overview of Lewis's entire career looks at his struggle against prevailing ideas. The main theme of the book, comparing Lewis and his characters to Cervantes' Don Quixote, is well presented.

Lingeman, Richard, Sinclair Lewis...