In September 1929, less than a year after Steamboat Willie, the first successful Mickey Mouse cartoon, was released, the first Mickey Mouse Club was formed by the Fox Dome Theatre in Ocean Park, California. Disney quickly saw the potential of such a Club and supplied theatre managers with starter packs containing a manual, song sheets, badges and so on. (These are now highly collectable.) The Clubs usually met before the Saturday matinee and had quizzes and competitions for various prizes. By 1932, over 800 theatres were participating and there were over a million members of the Club. As well as promoting Mickey Mouse, the Club created an interest in collecting Disney items.