Oswald the Lucky Rabbit Mouse cartoon to be filmed was "Plane Crazy" in the summer of 1928, but it was produced as a silent and held back from release. The first Mickey Mouse film with a synchronized soundtrack, "Steamboat Willie", reached the screen that fall and became a major hit, eclipsing Oswald. "Plane Crazy" was later given its own synchronized soundtrack and released on March 17, 1929. Mintz, meanwhile, opened his own studio consisting primarily of former Disney employees, where he continued to produce Oswald cartoons, among them the first Oswald with sound, "Hen Fruit" (1929). While things were going in Mintz's favor, animators
Oswald the Lucky Rabbit Hugh Harman and Rudolf Ising asked Universal head Carl Laemmle to remove Mintz, suggesting they would be the ones to continue the Oswald series. But Laemmle denied their requests and even terminated Mintz's contract, opting to have the Oswald cartoons produced right on the Universal lot instead. By a coincidence, Disney and Mintz each produced nine cartoons the first year and 17 the next, before Oswald was taken over by others. Laemmle selected Walter Lantz to produce the new series of Oswald shorts (the first of which was 1929's "Race Riot"). Lantz consulted Disney about Oswald and he gave Lantz