Great Northern gave up on using E7 locomotives for its transcontinental trains in 1950, replacing them with F3s and F7s while consigning the E7s to non-mountainous trains such as the International and Red River. In early 1950, GN timetable covers still showed an E7 next to an F3, but by the time the streamlined Western Star replaced the Oriental Limited, the covers showed two F3s as shown here.
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Great Northern was not the only railroad to be disappointed in E units for mountain service. The Santa Fe, which had purchased E units before the war for the Super Chief and El Capitan, only purchased F units after the war. Southern Pacific, which operated many trains on relatively flat ground as well as in the mountains, bought a handful of E7s and E9s, but also had hundreds of F units. Continue reading