Mary Poppins in 2004, Walt Disney first attempted to purchase the film rights to "Mary Poppins" from P. L. Travers as early as 1938, but was rebuffed because Travers did not believe a film version of her books would do justice to her creation and did not want an animated cartoon based on it. The books had been a favourite of Disney's daughters when they were children, and he finally succeeded in purchasing the rights in 1961, although Travers demanded and got script approval rights. The relationship between Travers and Disney is detailed in "Mary Poppins She Wrote", a biography of Travers,
Mary Poppins (film) film version of her books would do justice to her creation. In addition, Disney was known at the time primarily as a producer of cartoons and had yet to produce any major live-action work. For more than 20 years, Disney periodically made efforts to convince Travers to allow him to make a "Poppins" film. He finally succeeded in 1961, although Travers demanded and got script approval rights. The Sherman Brothers composed the music score and were also involved in the film's development, suggesting the setting be changed from the 1930s to the Edwardian era. Pre-production and song composition took about