Editing 2-4-2 (section)

===United States===
[[File:St. Louis, Iron Mountain & Southern -5 (Porter 2-4-2) - 10570956923.jpg|left|thumb|[[St. Louis, Iron Mountain and Southern Railway 5]] was built as a 2-4-2T, but it was later modified as a tender engine by the [[Crab Orchard and Egyptian Railway]].]]

The tank-type 2-4-2T was common in the U.S. around the dawn of the twentieth century in both suburban passenger service and on logging railroads. The [[Baldwin Locomotive Works]] built a demonstrator tender type engine which was displayed at the Columbian Exposition of 1893, leading to the type's name. This locomotive featured ambitious seven foot tall driving wheels, and was one of the first tender-equipped locomotives with a trailing truck. This freed the firebox from having to sit narrowly between, or above, the drive wheels, and was a very influential design.

This inspired three major U.S. railroads ([[Atlantic Coast Line Railroad|Atlantic Coast Line]], [[Chicago, Burlington and Quincy Railroad|Burlington]] and [[Reading Company|Reading]]) to purchase a few of the type. But the two-wheeled lead truck was never well-suited to high speed service on far-flung North American rails. Some were converted to [[4-4-2 (locomotive)|4-4-2]] Atlantic types and others were converted to [[4-6-0]] Ten Wheelers. The display locomotive was donated to Columbia University. In one respect, however, it was a success. A great many Atlantic types would follow, most based on the design.<ref>{{Cite web|url=https://www.steamlocomotive.com/locobase.php?country=USA&wheel=2-4-2&railroad=baldwin|title = Baldwin 2-4-2 "Columbian" Locomotives in the USA}}</ref>

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