The Pony Express relay service carried mail 3,100 km from Missouri to California in about 10 days using a chain of horse riders, briefly making it the fastest communication link between the coasts before the transcontinental telegraph rendered it obsolete.

Though short-lived, the Pony Express became one of the most mythologized institutions of the American West, inspiring poems, dime novels, and the heroic imagery of frontier poetry. This romanticized portrayal captured the spirit of adventure and the challenges of communication across vast landscapes.