John Ford directed the Civil War episode and George Marshall directed the sequences depicting the coming of the railroad. The rest was credited to Henry Hathaway, who, in a 1970s interview, tried to claim that he had actually re-filmed most of the Marshall footage and was severely critical of Ford's work. Both Ford and Marshall had died by this time. Hathaway also insisted that he had been an uncredited producer on the film. As the film was a far bigger box-office hit than Hathaway had ever previously had, these remarks may be inspired by egotism and thus not be strictly accurate; it is worth noting that Hathaway has also claimed the film had a budget of $9,800,000 for the film, whereas others have suggested it was more like $14,000,000. Presumably the difference was made up by the cost of the Ford and Marshall sequences.