Hannibal and St. Joseph Railroad
Overview
 
The Hannibal and St. Joseph Railroad was the first railroad to cross Missouri starting in Hannibal
Hannibal, Missouri
Hannibal is a city in Marion and Ralls counties in the U.S. state of Missouri. Hannibal is located at the intersection of Interstate 72 and U.S. Routes 24, 36 and 61, approximately northwest of St. Louis. According to the 2010 U.S. Census the population was 17,606...

 in the northeast and going to St. Joseph, Missouri, in the northwest. It is said to have carried the first letter to the Pony Express
Pony Express
The Pony Express was a fast mail service crossing the Great Plains, the Rocky Mountains, and the High Sierra from St. Joseph, Missouri, to Sacramento, California, from April 3, 1860 to October 1861...

 on April 3, 1860, from a train pulled behind the locomotive Missouri.

The line connected the second and third largest cities in the state of Missouri prior to the American Civil War.
 
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