Samuel Hobbs & Company. "Plan of Hoosac Tunnel Dock and Elevator Company's docks and land in Charlestown, Mass." Map. Boston: Lith. Samuel Hobbs & Co., 169 Devonshire St., [1880–1889]. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:ht2503184 (accessed April 24, 2024).