The Postmaster General of The United States presents the history of the Postal Service from the Pony Express through the introduction of Mr. Zip and the value of snail mail, delivered by Perry Como, Fats Domino, The Box Tops, Al Jolson, Elvis Presley, Johnny Horton, The Beatles, The Marvelettes, Belle & Sebastion, Bruce Springsteen & The E Street Band, Robert Glasper, Wake Owl, Ringo Starr, Jo-el Sonnier, The Ink Spots, Sopwith Camel, The Beau Hunks, Billy Williams and Robert Plant & Alison Krause