Mary Poppins Returns development hell since the release of the 1964 film. Walt Disney attempted to produce a sequel a year subsequent to the film's release, but was rejected by author P. L. Travers, who had openly dismissed Disney's film adaptation. In the late 1980s, then-chairman of Walt Disney Studios Jeffrey Katzenberg and vice-president of live-action production Martin Kaplan approached Travers with the idea of a sequel set years after the first film, with the Banks children now as adults and an older Mary Poppins with Julie Andrews reprising the role. Travers again rejected the proposed concept with the exception of Andrews' return.
Mary Poppins by Valerie Lawson, published by Aurum Press in the United Kingdom. The relationship is also the subject of the 2013 Disney film "Saving Mr. Banks", starring Emma Thompson as Travers and Tom Hanks as Walt Disney. The process of planning the film and composing the songs took about two years. Songs in the film are by the Sherman Brothers. Mary Poppins is played by British actress Julie Andrews. Disney cast Dick Van Dyke in the key supporting role of Bert, while Banks children were played by Karen Dotrice and Matthew Garber. George and Winifred Banks were played by David Tomlinson