The Pony Express, icon of the American West, operated for only 18 months (1860-1861) before the transcontinental telegraph made it obsolete.
Sources
- https://www.encyclopedia.com/history/united-states-and-canada/us-history/pony-express (encyclopedia.com)
- https://www.loc.gov/item/today-in-history/october-24/ (loc.gov)
- https://facts.usps.com/pony-express-history/ (facts.usps.com)
- https://www.britannica.com/topic/Pony-Express/Final-days (britannica.com)
- https://nationalponyexpress.org/historic-pony-express-trail/1860-1861-history/ (nationalponyexpress.org)
- https://www.historyofinformation.com/detail.php?id=2758 (historyofinformation.com)
- https://www.nps.gov/poex/learn/historyculture/index.htm (nps.gov)
- https://historynet.com/pony-express/ (historynet.com)