So, for some odd reason, I've been recently drawn to this locomotive. The ALCO RSD15 was a Six Axle Road Switcher built between 1956-1960, Only a total of 75 were produced. The locomotive produced 2,400HP with an ALCO 251B as its power source. The locomotive got the nickname "Alligator" due to its long nose on low short hood versions. Possible Road names -ATSF (50) Bessemer & Lake Erie (Former DMIR locos) (6) Pennsylvania Railroad/Penn Central (Some still exist as CSX Slugs) (6) -Southern Pacific/Cotton Belt (3/10) -Canadian Pacific #8921 (RSD17 demonstrator) A single RSD17 unit was built in 1957 and was very similar to the RSD15, CP purchased it after demonstration runs on CP,CN and PGE rails. It ran untill 1995, when it was retired. It is currently preserved at the Elgin County Railway Museum in St. Thomas, Ontario.