Gone with the Wind (film) task ... and Howard's first submission was far too long, and would have required at least six hours of film; ... [producer] Selznick wanted Howard to remain on the set to make revisions ... but Howard refused to leave New England [and] as a result, revisions were handled by a host of local writers". Selznick dismissed director George Cukor three weeks into filming and sought out Victor Fleming, who was directing "The Wizard of Oz" at the time. Fleming was dissatisfied with the script, so Selznick brought in famed writer Ben Hecht to rewrite the entire screenplay within five days.
Gone with the Wind (film) credits filed with the Screen Writers Guild, Sidney Howard was of course awarded the sole screen credit, but four other writers were appended ... Jo Swerling for contributing to the treatment, Oliver H. P. Garrett and Barbara Keon to screenplay construction, and Hecht, to dialogue ..." Principal photography began January 26, 1939, and ended on July 1, with post-production work continuing until November 11, 1939. Director George Cukor, with whom Selznick had a long working relationship, and who had spent almost two years in pre-production on "Gone with the Wind", was replaced after less than three weeks of shooting. Selznick