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| Class One BNSF Canadian National CP Rail CSX Norfolk Southern Union Pacific Regional Shortline Tourist and Passenger Resources
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 UP 1949 does some yard work near downtown St. Louis, MO. Union Pacific (UP) is one of the two class one railroads of the western United States. Over the years, Union Pacific has acquired several other railroads, including the Southern Pacific and the Missouri Pacific. In fact, some of the power of these two fallen flags can still be seen running the rails of the UP. |