Carl weber contributed this left-side view of Milwaukee Road F7 4-6-4 No. 104, snapped in Chicago on November 24, 1938 not long after delivery from the builder. The large 96½-square-foot grate area of these engines, combined with an evaporative heating surface of 4166 square feet and 1695 square feet of superheating surface, created the steam capacity for their premier high-speed service. Once diesel power took over the Hiawathas, however, these shrouded Hudsons were found not as well suited to other duties as the earlier class F6 4-6-4s. As a result they met an early demise, all being consigned to the scrapyard by the end of 1951.