Originally built by General Electric for export to the Soviet Union, the EF-4 "Little Joe" was one of the most famous electric locomotives to appear on American rails. After sales to Russia were prohibited in the late 40's, the Joes languished at GE's facility until the Milwaukee Road started to show interest in them for it's electrified Rocky Mountain Division. The Milwaukee used them in both passenger and freight service, up until the end of electric service in the seventies.
Other users of Little Joes included Brazil's national railway (which received five of them), and the Chicago, South Shore, and South Bend, which got three of them. This survivor is one of the South Shore's, and is preserved at the Illinois Railway Museum.