Baldwin Locomotive Works delivered the Richmond, Fredericksburg & Potomac's first group of 4-8-4s in 1937. Not wishing to designate them by the usual name Northern for this type, the RF&P styled these engines "Generals," all five being named for Confederate generals. No. 552, the General T. J. Jackson, posed for this Baldwin builder's photo. Weighing 466,040 pounds, the "Generals" exerted 66,391 pounds of tractive effort. They had 77-inch drivers, 27x30-inch cylinders, and 275 p.s.i. of boiler pressure. With 4372 square feet of evaporative heating surface and 2165 square feet of superheater surface, they had a grate area of 96 square feet. Through a design error the "Generals" were too heavy for the Long Bridge over the Potomac into Washington, D.C., and also a few inches too wide for the tunnel under Capitol Hill into Washington's Union Station; hence they were mostly restricted to freight service despite their high drivers. All were retired by the end of 1952.