John Ford's film adaptation of "The Grapes of Wrath" is generally consistent with John Steinbeck's novel, with some plot and thematic deviations. The first part of the film follows the novel closely, while the second half and the ending vary.
The novel's ending features Rose-of-Sharon delivering a stillborn baby and breast-feeding a dying man, scenes that are not included in the movie. The film also ends with the novel's government camp scene, rather than the strike-breaking scene where Tom is clubbed. Additionally, the socialist and collectivist political themes of the book are downplayed in the movie, as is any sexual or controversial content.