The Southern Railway's class Ms-4 2-8-2s were the railroad's mainstays for fast freight service through World War II, and occasionally hauled passenger trains. Erected by American Locomotive Company and Baldwin Locomotive Works between 1923 and 1928, they followed the USRA heavy Mikado design with improvements. No. 4821, seen here at Charlotte, North Carolina on June 29, 1938 (photographer unnamed), belonged to the first group that came from ALCo's Richmond works in 1923. With cylinder dimensions of 27x32 inches, they sustained a boiler pressure of 200 p.s.i. and rolled on 63-inch drivers. For other specifications consult the commentary for No. 6350 of the CNO&TP below. Members of No. 4821's 1923 group were equipped with the Baker valve gear, and online left-side photos of other members of the group show that they were equipped with the Worthington type BL feedwater heater.