change to the locomotive's Woodward PGE engine governor. Preservation In late October 2022, the Illinois Railway Museum acquired former Chicago & North Western #7009, believed by the museum to be the first preserved SD50. See also List of GM-EMD locomotives List of GMD Locomotives References External links Lytle, Stan. EMD SD50 list. Retrieved 16 February 2005. TrainWeb.com. The Unofficial EMD homepage. Retrieved 7 January 2005. Contains fairly complete builders' records for EMD production. C-C locomotives Clyde Engineering locomotives Diesel-electric locomotives of the United States Diesel locomotives of Western Australia SD50 Freight locomotives SD50 Railway locomotives introduced in 1980 Standard gauge locomotives of the United States Standard gauge locomotives of Canada Standard gauge locomotives of Australia Diesel-electric locomotives of Australia