When built in 1941 for the City of San Francisco, this Union Pacific EMD E6A unit was numbered SF-4 and bore the heralds of all three railroads participating in the premier "Overland Route" train. (The trailing "B" units were SF-5 and SF-6.) In 1946 SF-4 was renumbered to 904A, and in 1948 it was sold to the Chicago & North Western and renumbered 985J. The image was scanned from A Brief History of the Chicago and North Western Line, issued by the C&NW in 1942.