See New Jersey Central Railroad

The Morris and Essex Railroad was a railroad across northern New Jersey, later part of the main line of the Delaware, Lackawanna and Western Railroad.

This is not the Pascoag Line, part of the Providence and Springfield Railroad, which ran from Pascoag to the Cove depot in Providence, Rhode Island.

The Hartford and New Haven merged with the New York and New Haven Railroad in 1872, forming the New York, New Haven and Hartford Railroad (the New Haven). For the next 90 years, the route remained a vital passenger and freight route for the New Haven, with continuous passenger service even as most other lines in the region gradually had passenger service discontinued from the 1920s onward.

Wikipedia

The Portland, Saco and Portsmouth Railroad (PS&P) was a railroad in Maine that ran from Portland via Saco to South Berwick.

The Manchester and Lawrence was chartered in 1847 and opened in November 1849. It leased the newly built Methuen Branch from the Boston and Maine Railroad which opened in August 1849 and ran from South Lawrence through Methuen to the state line where the two lines met.