Wild West Chronicles (2021)

S1E11 Stagecoach Mary

When Mother Amadeus falls sick, Mary Fields, a former slave, journeys west to care for the ailing nun. As she tends to her, Mary discovers her strength and becomes a daring mail carrier for the U.S. Postal Service. Defending the mail from thieves along her routes, she earns the legendary title of "Stagecoach Mary."