Parrott, George B. "Map of parts of Middlesex & Essex counties, showing the rail road routes between Salem, Lowell, Boston & Methuen." Map. Boston: Lith of E.W. Bouvé, 1847. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:9g54xk44k (accessed April 25, 2024).