This locomotive was used for crack passenger service on the Chicago & Northwestern Railroad.
In 1946 the locomotive was retired from the Chicago & Northwestern railroad.
This locomotive is now a major exhibit at the St Louis Museum of Transportation.
This is the only remaining "Atlantic" from the Chicago and North Western railroad.
It is the first locomotive to have arrived at the museum in 1948, after being donated by John Russell Smith, who bought it from the C&NW in 1946.