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 Returns era of superhero franchises where sequels to successful movies turn up almost instantly, Mary Poppins’s return shows that sometimes it pays to wait. Half a century on, her allure hasn’t faded at all." Owen Gleiberman of "Variety" deemed the film as a "rapturous piece of nostalgia", lauded Blunt's take on Mary Poppins and described her casting as "practically perfect", while lending his praise on Marshall's direction as well the production design, musical score, songs, and the supporting performances (particularly Miranda, Whishaw, Firth, and Streep). He also drew comparisons of the film's quality and tone to the 1960s musicals as well