The Louisville and Nashville Railroad (reporting mark LN), commonly called the L&N, was a Class I railroad that operated freight and passenger services in the southeast United States.
The Baltimore and Ohio Railroad (reporting mark BO) was the first common carrier railroad and the oldest railroad in the United States with its first section opening in 1830. Merchants from Baltimore, which had benefited to some extent from the construction of the National Road early in the century, wanted to do business with settlers crossing the Appalachian Mountains.
The New Haven and Northampton Railroad (founded as the New Haven and Northampton Company, also known as the Canal Line) was a railroad originally built alongside a canal between 1847 and 1850 in Connecticut.
The Cumberland Valley Railroad (reporting mark CVRR)[1] was an early railroad in Pennsylvania, United States, originally chartered in 1831 to connect with Pennsylvania's Main Line of Public Works.
The Pittsburgh, Cincinnati, Chicago and St. Louis Railroad, commonly called the Pan Handle Route (Panhandle Route in later days), was a railroad that was part of the Pennsylvania Railroad system.