Wayback ALCO Machine: Midwest ALCO Wonderland Tucked away in the MNNR roundhouse, 3 ALCO/MLW products are either at rest or stored. MLW M420 #35, ALCO RS-27 #318, and ALCO C424 #314 are visible. The Commercial generally rotates their power as the needs change, however the ALCO ranks on the MNNR roster are dwindling.