Katherine Hepburn, Loretta Young, Helen Hays, and Lana Turner all tested for Gone with the Wind's Scarlet OHara. Even Lucille Ball read for the part.
The most extensive screen tests in the history of motion pictures were held for the role of Scarlet OHara in Gone with the Wind. MGM shot 149,000 feet of black-and-white test film and another 13,000 feet of color film with 60 actresses.
The famous burning of Atlanta scene in Gone with the Wind (1939) consisted of burning the old sets from King Kong (1933), The Last of the Mohicans (1936), and Little Lord Fauntleroy (1936).