The year is supposed to be 1932. At the end of the scene with Perry and Della drinking and talking. a modern automobile, recognizable by shape and lights, passes from left to right outside the window behind Della.
The year is 1932. When Sister Alice and other members of the Radiant Assembly of God count the donations money, one dollar bills have red Treasury seal. Yet this kind of bills were issued only at 1933 and only small amount got into circulation. The actual dollar bills at that time had blue Treasury seal.
Lyle reads a list of well-known Los Angeles lawyers, most of whom were real people. He mispronounces the name of famed attorney Jerry Giesler as Guy-sler. It is actually pronounced Geese-ler.