Sonny Boy is a 1929 film released by Warner Bros., directed by Archie Mayo, and starring Davey Lee, Edward Everett Horton, and Betty Bronson. Some of the movie was shot silent, and some was filmed in the Vitaphone soundondisc system.
Sony Boy is a lost film. All of the featurelength movies Edward Everett Horton made from 1928 to 1929 with Warner Bros. are lost, except Lights of New York 1928, in which Horton was an extra in one scene. Although he was a major comedian in vaudeville, he had not established himself in silent films, since he was a verbal comedian and not really a physical comedian.
Source: Wikipedia