ponyexpress Delivery service of yore 19th-century mail transport 19th-century mail delivery service Old West mail system Old Missouri-to-California mail system Its first delivery went from St. Joseph, Missouri, to San Francisco (1860) Delivery service of old It delivered in the Old West Mail service made obsolete by the transcontinental telegraph Enterprise for which a 14-year-old Buffalo Bill worked They were seldom left at post Short-lived mail system Old West conveyance Legendary mail service