In 1934 the Baltimore & Ohio's Mount Clare Shops converted a 4-4-2 into the Lady Baltimore, a light-weight, clean-lined 4-4-4 featuring a combination firetube and watertube boiler. Carrying number 1 and classed as J-1, she was placed in service on the Abraham Lincoln, premium passenger train of the Alton Railroad, then controlled by the B&O. Despite the Alton main line's mostly flat profile over the Illinois prairie, the "Lady Baltimore" did not perform well; her light weight reduced the factor of adhesion, resulting in wheel slippage of the high 84-inch drivers. Consequently the B&O transferred the locomotive to local service elsewhere on its system, renumbering her to 5330, and dismantled the engine in 1949. (Click here to view a Railroad Magazine news item on the scrapping of the Lady Baltimore and her companion experimental locomotive, the 4-6-4 Lord Baltimore.)

The Lady Baltimore sustained a boiler pressure of 350 p.s.i., with cylinder dimensions being 17½x28 inches. Locomotive weight was 217,800 pounds, and she put out 30,370 pounds of tractive force. With a grate area of nearly 62 square feet, her evaporative heating surface was 1780 square feet and superheater surface 415 square feet. This photo, provided by Edward Lorence from his collection, was taken in St. Louis at an unspecified date during the locomotive's service on the Alton; the photographer is unnamed.