| Built by Alco-Schenectady in December of 1910 as compound Mallet CM&StP 2-6-6-2 #5015, it was renumbered and simplified during its long service life - 5015>9515>9308>MILW #58. The loco was retired in October of 1951 after 41 years of service. Simplified specs - 57" drivers, 200 psi boiler pressure, four 21 1/2x30" cylinders, engine weight of 390,300 lb and tractive effort of 82,720 lb. This is a Robert Graham photo No date or location was given so an approximate was used. |