The Walt Disney Company and starred in several Disney produced films. Ub Iwerks refined Disney's initial design of Mickey Mouse. Disney's first sound film "Steamboat Willie", a cartoon starring Mickey, was released on November 18, 1928 through Pat Powers' distribution company. It was the first Mickey Mouse sound cartoon released, but the third to be created, behind "Plane Crazy" and "The Gallopin' Gaucho". "Steamboat Willie" was an immediate smash hit, and its initial success was attributed not just to Mickey's appeal as a character, but to the fact that it was the first cartoon to feature synchronized sound. Disney used Pat Powers' Cinephone system,
Walt Disney World Company reincorporated in Florida on September 30, 1997. On January 26, 1998, Ranch and Grove Holding Corporation, which had owned some of the land in Walt Disney World since April 12, 1972 was merged into Walt Disney World Company. Reedy Creek Energy Services, Incorporated, originally known as Reedy Creek Utilities Company, Incorporated was merged into Walt Disney World Company on September 30, 1999. On October 2, 2000, MDMP Corporation, which had been deeded many improvements in Walt Disney World on December 20, 1996, was merged into Walt Disney World Company. Walt Disney World Company changed its name to Walt Disney Parks