Keywords: 1887 TremontSt BoylstonSt Boston.png Boston Massachusetts Frank Cheney Anthony Mitchell Sammarco Trolleys Under the Hub Arcadia Publishing 1997 1887 Author unknown 1887 in Boston Tremont Street PD-Old Files for cleanup by Pi 1415926535 Black and white photographs of trams 1887 in tram transport Aftermath of explosion during construction of Boylston station, May 1897.png Aftermath of an explosion during the construction of the Tremont Street Subway in May 1897 Gas from a leaking main damaged by subway construction was ignited by sparks from a trolley passing on the surface Seven bystanders were killed and over forty injured Frank Cheney Anthony Mitchell Sammarco Trolleys Under the Hub Arcadia Publishing 1997 1897-05-04 Author unknown 1897 in Boston Tram transport on Tremont Street PD-Old Files for cleanup by Pi 1415926535 Black and white photographs of trams 1887 in tram transport Construction of the Tremont Street Subway Old images of Boylston MBTA station Explosions in the United States |