on the D&I Division, and the four oil-burners on the Idaho Division. By December 1954, however, the Milwaukee was effectively dieselised. As the equipment trusts on the ten locomotives had yet to expire, they could not be scrapped or sold, so they were placed into storage – the Idaho four going to Tacoma. Preservation Two S3s survived into preservation: Milwaukee Road 261 was retired in August 1956 and donated to the National Railroad Museum in Green Bay, Wisconsin in 1958. Today, the locomotive is owned, operated, and maintained by Minneapolis-based nonprofit organization Friends of the 261, which runs occasional and seasonal excursion trains using the locomotive. Milwaukee Road 265 was retired in September 1956 and donated to the city of Milwaukee, Wisconsin and sat the on display until 1975. The locomotive was then moved to the Illinois Railway Museum in Union, Illinois where it currently resides. References S3 ALCO locomotives 4-8-4 locomotives Preserved steam locomotives of the United States Railway locomotives introduced in 1944 Standard gauge locomotives of the United States Passenger locomotives Freight locomotives