The Butterfield Overland Mail was a pioneering mail and passenger service that operated from 1858 to 1861. It was established by John Butterfield, who won a federal contract to transport mail twice a week between St. Louis, Missouri, and San Francisco, California, in 25 days or less. This service, known as the Butterfield Overland Trail, … Continue reading The Butterfield Overland Mail and Its Impact on California