Editing 4-2-0 (section)

===United States===
[[File:Pioneer CNW 4-2-0.jpg|thumb|The [[Chicago and North Western Transportation Company|Chicago and North Western Railway's]] first locomotive, ''[[Pioneer (locomotive)|Pioneer]]'']]
The first railroad locomotive to operate in [[Chicago, Illinois]] was a {{nowrap|4-2-0}}, the ''[[Pioneer (locomotive)|Pioneer]]'', which was built in 1837 by [[Baldwin Locomotive Works]] for the [[Utica and Schenectady Railroad]] in [[New York (state)|New York]]. It was later purchased used by [[William B. Ogden]] for the [[Galena and Chicago Union Railroad]], the oldest predecessor of the [[Chicago and North Western Railway]]. The locomotive arrived in Chicago by schooner on 10 October 1848 and it pulled the first westbound train out of the city fifteen days later, on 25 October 1848.<ref name="Chicago">[http://www.steamlocomotive.com/union/ SteamLocomotive.com - Chicago Area Steam The Illinois Railway Museum] {{Webarchive|url=https://web.archive.org/web/20180713231240/http://www.steamlocomotive.com/union/ |date=2018-07-13 }} (Accessed on 22 August 2016)</ref>