- January 12
- 1882 – The first train between Cincinnati and Dayton, Ohio, delayed by poor trackwork on the Cincinnati Northern Railway, arrives in Dayton; it departed Cincinnati on January 9.
- 1883 – The second transcontinental railroad line in North America is completed as the Southern Pacific Railroad tracks from Los Angeles, meet the Galveston, Harrisburg and San Antonio Railway at the Pecos River. The golden spike is driven by Col. Tom Pierce, the GH&SA president, atop the Pecos River High Bridge.
- 1957 – Operations of the Santa Fe Railroad's Super Chief and El Capitan passenger trains are combined (pictured) during off-peak seasons.
- 2005 – General Motors announces that it has agreed to sell its Electro-Motive Division to a partnership led by Greenbriar Equity Group and Berkshire Partners.
- General Motors (January 12, 2005). "GM Agrees To Sell Electro-Motive Division". Retrieved January 12, 2005.