1891 Map of the railroads of the state of Massachusetts , prepared under supervision of George C. Crocker, Edward W. Kinsley, Everett A. Stevens, commissioners, from the Digital Commonwealth - ocm55669695. (<a rel="nofollow" class="external free" href="https://www.digitalcommonwealth.org/search/commonwealth-oai:ww72bh35m">https://www.digitalcommonwealth.org/search/commonwealth-oai:ww72bh35m</a>)
Massachusetts Board of Railroad Commissioners
Digital Commonwealth