The Baldwin DRS-4-4-1500 was a diesel-electric locomotive of the road switcher type rated at , that rode on two-axle trucks, having a B-B wheel arrangement. It was manufactured by Baldwin Locomotive Works from 1947 until it was replaced in 1950 by the AS-16.
Nine railroads bought 35 locomotives, with five railroads later buying the successor model.
Railroad Quantity Road numbers NotesErie Railroad 6 1100–1105 Lehigh Valley Railroad 1 200 Iron Mines of Venezuela (Bethlehem Steel Company) 3 1–3 Minneapolis, St. Paul and Sault Ste. Marie Railroad ("Soo Line") 8 360–367 Missouri Pacific Railroad (St. Louis, Brownsville and Mexico Railway) 4 4112–4115 New York Central Railroad 2 7300–7301 Northern Pacific Railway 2 175–176 Renumbered 500–501 to Burlington Northern 405-406Pennsylvania-Reading Seashore Lines 6 6000–6005 Western Maryland Railway 3 170–172 Total 35
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