All aboard for a brand-new Little Engine story! Little Engine agreed to deliver the mail when the Postman went off on vacation. Now, readers can come along for the ride as she travels from friend to friend delivering mail. With delightful rhymes on every page, plus real, folded letters and envelopes inside, Little Engine fans will find a surprise on every page, including stamps from around the world, recipes sent with love, long-awaited packages, and so much more.