Boom Town (1940) was a Hollywood film starring Clark Gable, Spencer Tracy, Claudette Colbert, Hedy Lamarr, and Frank Morgan. 1940 (MCMXL) was a leap year starting on Monday (the link is to a full 1940 calendar). ... ... Film refers to the celluloid media on which movies are printed. ... Clark Gable with 8th AF in Britain, 1943 Clark Gable (February 1, 1901âNovember 16, 1960) was an American film actor and the biggest box office star of the early sound film era. ... Spencer Tracy Spencer Tracy (April 5, 1900 â June 10, 1967) was an American film actor who appeared in 74 films from 1930 to 1967. ... Claudette Colbert Claudette Colbert (September 13, 1903 - July 30, 1996) was an Academy Award-winning French-American actress for It Happened One Night. ... Hedy Lamarr Hedy Lamarr (November 9, 1913 â January 19, 2000) was an actress and communications technology innovator. ... Frank Morgan as The Wizard of Oz. ...