>> History of Mickey Mouse and Silly Symphonies (1928–1934)

In 1928, to recover from the loss of Oswald the Lucky Rabbit, Disney came up with the idea of a mouse character named Mortimer while on a train headed to California, drawing up a few simple drawings. The mouse was later renamed Mickey Mouse (Disney's wife, Lillian, disliked the sound of 'Mortimer Mouse') 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.

Original poster for Flowers and Trees (1932).

 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, created by Powers using Lee De Forest's Phonofilm system. Steamboat Willie premiered at B. S. Moss's Colony Theater in New York City, now The Broadway Theatre. Disney's Plane Crazy and The Galloping Gaucho were then retrofitted with synchronized sound tracks and re-released successfully in 1929.

Disney continued to produce cartoons with Mickey Mouse and other characters, and began the Silly Symphonies series with Columbia Pictures signing on as Symphonies distributor in August 1929. In September 1929, theater manager Harry Woodin requested permission to start a Mickey Mouse Club which Walt approved. In November, test comics strips were sent to King Features, who requested additional samples to show to the publisher, William Randolph Hearst.

On December 16, the Walt Disney Studios partnership was reorganized as a corporation with the name of Walt Disney Productions, Limited with a merchandising division, Walt Disney Enterprises, and two subsidiaries, Disney Film Recording Company, Limited and Liled Realty and Investment Company for real estate holdings. Walt and his wife held 60% (6,000 shares) and Roy owned 40% of WD Productions. On December 30, King Features signed its first newspaper, New York Mirror, to publish the Mickey Mouse comic strip with Walt's permission.

In 1932, Disney signed an exclusive contract with Technicolor (through the end of 1935) to produce cartoons in color, beginning with Flowers and Trees (1932). Disney released cartoons through Powers' Celebrity Pictures (1928–1930), Columbia Pictures (1930–1932), and United Artists (1932–1937). The popularity of the Mickey Mouse series allowed Disney to plan for his first feature-length animation.

The feature film Walt Before Mickey based on the book by Diane Disney Miller featured these moments in the studio's history.
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