Vivien Leigh travelled to Hollywood, leaving Leigh in London. Goldwyn and the film's director, William Wyler, offered Leigh the secondary role of Isabella, but she refused, preferring the role of Cathy, which went to Merle Oberon. Hollywood was in the midst of a widely publicized search to find an actress to portray Scarlett O'Hara in David O. Selznick's production of "Gone with the Wind" (1939). At the time, Myron Selznick—David's brother and Leigh's American theatrical agent—was the London representative of the Myron Selznick Agency. In February 1938, Leigh made a request to Myron Selznick that she be considered to play the part
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