The Fitchburg and Worcester Railroad was a railroad in Massachusetts. It was incorporated in 1840 to provide a rail connection between Fitchburg and Worcester.

The Norfolk County Railroad was a railroad in Massachusetts, United States. Chartered as two different companies in 1846 and 1847, it completed a rail line between Dedham and Blackstone in 1849. A branch to Medway, Massachusetts was built in 1852.

The current company, established in 1992 is a separate entity from the original Allegheny Valley Railroad, which was established in the 1850s. That line, affiliated with the Pennsylvania Railroad system, followed the present company's tracks to Arnold and continued beyond, along the right upstream (southeastern) bank of the river to Oil City.

The Elmira and Williamsport Railroad (earlier Williamsport and Elmira Railroad) is a historic railroad that operated in Pennsylvania.

The W&E was organized in 1832 and ran between Williamsport, Pennsylvania and Elmira, New York. It was reorganized as the E&W in 1860, and operated its own property until 1863.

The Norwich and Worcester Railroad (N&W) was a railroad in the U.S. states of Connecticut and Massachusetts.

The New Haven and New London Railroad was chartered May 1848 to build a line from New Haven, the east end of the New York and New Haven Railroad, east to New London on the Thames River and the south end of the 

The New York, Providence and Boston Railroad, normally called the Stonington Line, was a major part of the New York, New Haven and Hartford Railroad between New London, Connecticut and Providence, Rhode Island.

The Boston and Providence Railroad was a railroad company in the states of Massachusetts and Rhode Island which connected its namesake cities. It opened in two sections in 1834 and 1835 - one of the first rail lines in the United States - with a more direct route into Providence built in 1847.

The corridor from Providence, Rhode Island, west into New York was originally chartered as three companies. The Providence and Plainfield Railroad, chartered in June 1846, would run from Providence to the Rhode Island–Connecticut state line.