The Alton & Southern received 0-8-0 No. 12 from American Locomotive Company in 1926. The locomotive is unusual in having three cylinders of 22x28 inches, the extra power having been suited to the A&S's switching and transfer operation in the St. Louis area. With a driver diameter of 57 inches and a boiler pressure of 200 p.s.i., the locomotive is rated at 60,600 pounds of tractive effort and has an engine weight of 242,500 pounds. The beefy 0-8-0 has a grate area of 56 square feet, 3071 square feet of evaporative heating surface, and 740 square feet of superheater surface. No. 12 is preserved today at the Museum of Transportation in suburban St. Louis. It is one of only four three-cylinder steam locomotives still in existence in North America. An unknown photographer snapped this picture at the Museum, and Gary Thompson provided it for our Random Steam Collection.