Apollo Movie Guide
Review, links, and cast information.
Elmer Gantry (1960) - The Essentials
Turner Classic Movies looks at the film, and John Alton's cinematography in particular.
Greatest Films - Elmer Gantry
Review, synopsis and discussion of the film
IMDb - Elmer Gantry
Cast/credits plus additional information about the film
Nutzworld
Reviewed, and compared with the novel, by Brian W. Fairbanks.