Chapter 45: Resolve providing for an investigation by the Division of Metropolitan Planning relative to the extension and development of rapid transit service in Boston, Somerville and surrounding cities and towns. Acts and resolves passed by the General Court of Massachusetts in the year 1924. May 24, 1924: 602–603 –通过Internet Archive.
Sheet 10. Track Lengths of Surface Lines and Subway. Boston Elevated Railway. 1921 [2019-07-24]. (原始内容存档于2018-09-15) –通过Ward Maps.
Part of Ward 6, City of Newton. Atlas of the City of Newton, Massachusetts. G.W. Bromley and Company. 1917 [2019-07-24]. (原始内容存档于2018-09-15) –通过Ward Maps.
Sheet 10. Track Lengths of Surface Lines and Subway. Boston Elevated Railway. 1921 [2019-07-24]. (原始内容存档于2018-09-15) –通过Ward Maps.
Part of Ward 6, City of Newton. Atlas of the City of Newton, Massachusetts. G.W. Bromley and Company. 1917 [2019-07-24]. (原始内容存档于2018-09-15) –通过Ward Maps.