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The Butterfield Overland Mail was a mail and passenger stagecoach service that linked the Western and Eastern states. John Butterfield, president of the Overland Mail Company, won a federal government contact in 1857 to take and deliver mail twice weekly in both directions between St. Louis, Missouri and San Francisco, California. The service ran from September 1858 until March 1861, when events leading to the Civil War ended its operations.