St. Louis, Iron Mountain and Southern Railway

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St. Louis, Iron Mountain and Southern Railway
St. Louis, Iron Mountain and Southern Railway Locomotive 635.jpg
No. 635, seen here in 2016 after preservation.
HeadquartersSt. Louis, Missouri
LocaleUnited States
Dates of operation1874–1917
SuccessorMissouri Pacific Railroad
Track gauge4 ft 8+12 in (1,435 mm) standard gauge

The St. Louis, Iron Mountain and Southern Railway (St. L., I. M. & S.), commonly known as the Iron Mountain,[a] was an American railway company that operated from 1874 until 1917 when it was merged into the Missouri Pacific Railroad.


The Iron Mountain was initially established to deliver iron ore from Iron Mountain to St. Louis, Missouri. In 1883 the railway was acquired by Jay Gould, becoming part of a 9,547-mile (15,364 km) system. On May 12, 1917, the company was officially merged into the Missouri Pacific Railroad, which in turn was merged into the Union Pacific Railroad in 1982. It was robbed twice, once by the James-Younger Gang, on January 31, 1874, at Gad's Hill,[1] and once by the "One-Time Train Robbery Gang", on November 3, 1893, at Olyphant, Arkansas.[2]

Heritage railroad[edit]

A heritage railroad by the same name, based in Jackson, Missouri operates about 6 miles (9.7 km) of shortline in Cape Girardeau County.


  1. ^ The railway is famous for giving its name to the Iron Mountain Baby, and the railroad is reported to have paid for the child's education.

See also[edit]


  1. ^ Hipp, Joe Wreford (1996). Legacy of a Robbery on the Iron Mountain Railroad. Little Rock, Arkansas: Renegade Press. ISBN 9781884469091. OL 12153582M.
  2. ^ Mansker, Dennis (2022). "Albert Mansker: Last of the Arkansas Train Robbers". The Mansker Chronicles. Retrieved September 21, 2022.

External links[edit]