However, Universal took control of the character in 1928, leading Disney to create a new character as Oswald's replacement.

This preview, on May 15 (or possibly a bit earlier, according to Disney historian J.B. Kaufman), marked the beginning of Mickey Mouse ... April, Walt and Roy snuck Iwerks’s drawings to ...

As Neal Gabler wrote in his book, Walt Disney: The Triumph of the American Imagination, “Mickey Mouse had become the ... His animators were sent to life drawing classes. Props and sets were ...