R. H. Carlson captured this image of No. 892 of the Rock Island's P-31 class of 4-6-2s at Chicago on July 19, 1947. The American Locomotive Company's Schenectady Works erected these engines in 1909 as unsuperheated. They were rebuilt with superheaters by the Rock Island in 1917, at which time the driver diameter was raised one inch to 74 inches. They sustained 185 p.s.i. of boiler pressure and had cylinders of 23x28 inches, and after rebuilding weighed 226,950 pounds and exerted 31,476 pounds of tractive force. Their grate area totaled 45 square feet, and they featured 2995 square feet of evaporative heating surface and 676 square feet of superheating surface.
No. 892's cast steel Delta trailing truck, not original equipment, suggests that she had been given a booster engine adding 10,198 pounds of tractive effort and had been reclassified to P-33-B. Other later modernizing features include the solid, plow-like pilot and the repositioning of the headlight, originally raised ahead of the stack, to the centered position on the smokebox front. This image was saved from a now-discontinued Internet site and may also be found in the Railfan.net ABPR Archive, having been contributed by Bud Laws.