Dick Van Dyke said he 'wept' when he first heard the music of 'Mary Poppins,' the 1964 musical marking its 60th anniversary. PEOPLE has a clip from ABC's upcoming two-hour special, 'The Untold Story of Mary Poppins: A Special Edition of 20/20.'
https://people.com/dick-van-dyke-cried-first-time-heard-mary-poppins-mu…