Universally recognized as a landmark in American literature,Elmer Gantryscandalized readers when it was first published, causing Sinclair Lewis to be “invited” to a jail cell in New Hampshire and to his own lynching in Virginia. His portrait of a golden-tongued evangelist who rises to power within his church—a saver of souls who lives a life of duplicity, sensuality, and ruthless self-indulgence—is also the record of a period, a reign of grotesque vulgarity, which but for Lewis would have left...