The Baldwin Locomotive Works built this Mountain-type (4-8-2) fast freight and passenger locomotive for $69,000. It was one of a series of 30 engines, and operated for 1,754,373 miles before its 1951 retirement. It has 69 1/2-inch driving wheels, 28-inch by 28-inch cylinders, 210-pound boiler pressure, is 88 feet 6 inches long, and weighs 589,890 pounds. The trailing axle under the cab is powered by a small, two-cylinder booster engine at low speeds, adding power for starting trains or on hills. Its tender holds 4,500 gallons of oil fuel and 11,700 gallons of water. It uses 10 to 15 gallons of fuel oil per mile, and produces 3600 horsepower. It was donated by the St. Louis-San Francisco Railway in 1958. The all-volunteer St. Louis Steam Train Association restored it to operation between September 1985 and April 1988, and gave it a second overhaul in 1998-99. From 1988 to 2002 it thrilled thousands as it operated on excursion trains throughout the Midwest, as well as being used by the film industry. A second tender carried 13,600 gallons of water to extend its operating range for these excursions.