Milwaukee's last new motors were delivered in 1950, the beloved "Little Joes." The 12 General Electric 5,100 horsepower streamlined units were part of an order for 20 placed by Joseph Stalin's Soviet government (hence the nickname), but cancelled as part of the U.S. Cold War embargo. The 2-D+D+2 Joes were the first juice jacks to arrive on the property since the EP-3s of 1920.

At left, Photographier Cooney caught E21 on the point of time frieght 264 between Butte and Whitehall, Montanna in a late snow of May 13, 1970. The locomotive and sister E20 were the only Joes in Class EP-4 equipped for passenger service with steam generators installed in the rear cab of each unit. By late 1956 they were placed in freight service with the other ten Joes of class EF-4 (photo by Ray Cooney).

Below, two Joes MU'ed with a GP9 diesel cross a bridge east of Butte in September, 1960 (photo by Frank G. Tatnall).