Even as Wood was filming "Kings Row" for Paramount in 1941, he began working on his major project for Warner Brothers: an adaption of novelist Ernest Hemingway's "For Whom the Bell Tolls". Wood proceeded to shoot numerous landscape scenes in the High Sierra Nevada range before the cast for the movie had been selected. Production on the film was set aside when Wood made "The Pride of the Yankees" for Samuel Goldwyn, and only returned to "For Whom the Bell Tolls" when that project was completed.