Somerville Journal: Green Line options and history Post published:April 8, 2004 Post category:Green Line “Which Green Line?” (PDF) “City had long romance with trains” (PDF) You Might Also Like Somerville Journal: Green Line good for businesses and economic justice February 24, 2005 Report warns of potential housing cost increases with Green Line extension February 13, 2014 Union Square station to open in October, Medford line in December April 9, 2021