The story of Mary Poppins, the quintessentially English and utterly magical children's nanny, is remarkable enough. She flew into the lives of the unsuspecting Banks family in a children's book that was instantly hailed as a classic, then became a household name when Julie Andrews stepped into the starring role in Walt Disney's hugely successful and equally classic film. Now she is a sensation all over again-both on Broadway and in Disney's upcoming film Saving Mr. Banks. Saving Mr. Banksretells many of the stories in Valerie Lawson's biography Mary Poppins, She Wrote, including P. L. Travers's move from London to Hollywood and her struggles with Walt Disney as he adapted her novel for the big screen. Travers, whom Disney accused of vanity for "thinking she knows more about Mary Poppins than I do," was a poet and world-renowned author as tart and opinionated as Andrews's big-screen Mary Poppins was cheery and porcelain-beautiful. Yet it was a love of mysticism and magic that shaped Travers's life as well as the very character of Mary Poppins. The clipped, strict, and ultimately mysterious nanny who emerged from her pen was the creation of someone who remained inscrutable and enigmatic to the end of her ninety-six years. Valerie Lawson's illuminating biography provides the first full look at the life of the woman and writer whose personal journey is as intriguing as her beloved characters.