I've identified the names of 159 railroads somehow associated with Mark 
Twain, from the time he first departed Hannibal until the end of the 
Three Speeches Tour.  Most of these were absorbed by others on the list, 
discontinued operation and/or changed their names.  I've only scratched 
the surface in researching these lines and now request any stories, 
anecdotes or other information you readers of Twain-L may know about 
regarding Twain and railroads.

http://twainsgeography.com/railroads

Thanks...