Morton, A. C., engineer. "Map of the European and North American Railway, showing its connection with the railways of the United States & Canada; made by direction of His Excellency John Hubbard, Governor of Maine under the resolve of Aug. 20th 1850." Map. Philaddelphia: Bowen & Co., 1850. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:7h149x03w (accessed April 24, 2024).