Most biographies of Walt Disney cover the full span of his life and the full history of his studio, from its start in 1923 until his death in 1966. However, these books, while broad, often give very little detail in the way of the production of its famous films, the operation of its studio, or its major accomplishments. How Walt Disney Changed Animation Forever instead focuses on a key period of the growth, innovation, and eclipsing popularity of the Walt Disney Studio, intertwining its narrative history with the historical context of the 1920s-1950s and the daily life of its founder. Based upon years of historical research including recollections by prominent Disney artists and on-the-ground, in-person experiences at key locations from Disney history, How Walt Disney Changed Animation Forever describes the global impact the studio had on how films were produced for decades to come.