Central Transportation Planning Staff (January 2004) [May 2003]. "Chapter 5C: Service Expansion"(PDF). 2004 Program for Mass Transportation. Boston Metropolitan Planning Organization. p. 5C–83. Archived from the original(PDF) on February 20, 2012.
Kennedy, Charles J. (Summer 1962). "Commuter Services in the Boston Area, 1835-1860". The Business History Review. 36 (2): 153–170. doi:10.2307/3111453. JSTOR3111453. S2CID154294514.
jstor.org
Kennedy, Charles J. (Summer 1962). "Commuter Services in the Boston Area, 1835-1860". The Business History Review. 36 (2): 153–170. doi:10.2307/3111453. JSTOR3111453. S2CID154294514.
"Local Railroad Notes". Boston Evening Transcript. April 16, 1884. p. 2 – via Newspapers.com.
semanticscholar.org
api.semanticscholar.org
Kennedy, Charles J. (Summer 1962). "Commuter Services in the Boston Area, 1835-1860". The Business History Review. 36 (2): 153–170. doi:10.2307/3111453. JSTOR3111453. S2CID154294514.
Central Transportation Planning Staff (January 2004) [May 2003]. "Chapter 5C: Service Expansion"(PDF). 2004 Program for Mass Transportation. Boston Metropolitan Planning Organization. p. 5C–83. Archived from the original(PDF) on February 20, 2012.