D23 day 2 part five: More Merry Poppins! Costumes, props, a banner from the movie premier, the two carousel horses (one restored and one left in its original state), and my favorite, a letter from P. L. Travers (the author of the original Mary Poppins) to Walt Disney after the premier. (Notice despite her positive tone, there’s one actor she leaves out. Can you figure out which?)