The 1940s are considered to be a prime decade ... Casablanca, and The Grapes of Wrath, which are just a few among many titles that remain to be beloved by generations of cinephiles.
As a movie, "The Grapes of Wrath" has proved nearly as successful as the best-selling novel. And the credit is not all Steinbeck's. Much lies with producer Zanuck, who was willing to pour money ...