The locomotive built for the Milwaukee & Mississippi railroad Company in 1857 as their number 40 and named Spring Green it was later renumbered 111 when the M&PdC was sold to the Milwaukee & St Paul Railroad in 1867; the railroad renaming itself The Chicago, Milwaukee & St. Paul 1874.
In 1889, the locomotive was sold to the Arizona and Southeastern Railroad Company, as their number 1, later becoming the El Paso and Southerstern Railroad.
In 1903, it was retired, and around 1909, Locomotive No. 1 was overhauled, painted, and put on display in Downtown El Paso at the intersection of Stanton and Franklin streets.
Today it is on static display at the Railroad and Transportation Museum of El Paso in El Paso, Texas.
In 1960, Southern pacific railroad donated it to the University of Texas at El Paso who displayed it near the Centennial Museum and Chilhauan Desert Gardens.
In 1968, El Paso Historical Society and the Junior Chamber of Commerce raised money to build a shelter to protect this important national treasure from the elements.
In 1889, the locomotive was sold to the Arizona and Southeastern Railroad Company, as their number 1, later becoming the El Paso and Southwestern railroad.
In 2001 more than 1.1 million dollars of Texas State Transportation Commission and local matching funds were allocated for the removal and restoration of the locomotive.
This locomotive almost look similar to the Union Pacific No. 119 because it has the same headlight, numberboard, and smokestack.