The Grapes of Wrath | Literary Precedents
Steinbeck did significant original research and fieldwork for this novel, traveling with migrants from Oklahoma to California and living in the migrant workers' camps for a time. His nonfictional reports of that experience were collected in Their Blood Is Strong (1938), and these can be seen as a source for materials that have found their way into The Grapes of Wrath. The novel is also similar in some ways to Steinbeck's earlier work about life in the California migrant camps, In Dubious Battle (1936).
The novel has other literary forbears as well. Certainly...
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