October 8, 1983

In recognition of the Sulphur Rock Street Car in Sulphur Rock (Independence County) being the last mule-drawn (bobtail) trolley car in the United States, the Postal Service issued a first-class, twenty-cent commemorative stamp. It was one of a setenant (joined) block of four stamps depicting four streetcars from around the country. A line drawing depicts the side view of the trolley, featuring a white mule pulling the car guided by its operator and transporting several passengers.