John Steinbeck's "The Grapes of Wrath" turns 75 on Monday. The book tells the trials of the Joad family during their journey to California at the height of the Depression. It was banned and burned in some cities when it was published. But it also won a Pulitzer Prize and a National Book Award, selling nearly half a million copies within a year. We travel to Steinbeck's hometown of Salinas to mark the anniversary.
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