Work on section 2 looking easterly (Tremont Street) Looking northerly at eastern bank of sec. 3 showing slope, Tremont and Park Streets, Boston, Mass. Excavating o sec. 2 looking south-westerly (Tremont Street) East bank of excavation on sec. 3 showing strata Work on sec. 2 looking southerly (Tremont Street) Trench machine across King's Chapel Burying Ground, Tremont Street, Boston, Mass., April 30, 1896 Western bank of excavation on sec. 3 showing strata (Tremont Street) Shaft on Tremont Street sec. 6, bucket ready to be lowered Excavation for sub-subway on sec. 2, looking west Incline in Public Garden Looking west in Public Garden Sec.5, showing amount of Shawmut Ave. occupied Sec.5, showing northerly Sec.5, looking northerly from Corner of Pleasant St. + Shawmut Ave. Work at the corner of Washington + Hanover Sts., looking south In sidewall trench, sec.8, Hanover St. Pipe-crossing opp. west St., sec.3 Interior of sewer siphon under Haymarket Sq. looking east Tunnel for sewer siphon under Hanover St. across Washington, sec.9 Edison pipe crossing in Haymarket Sq., looking east Edison pipe crossing in Haymarket Sq., looking west Model of shield Under Hanover St. sec.T Double ventilating chamber corner of Washington + Hanover Sts. Electric conduit and pipes at corner of Boylston + Tremont Sts. Some details under Tremont Street near Boylston looking north View in Haymarket Square, work on sec.10, Boston, Mass. Interior of lower story of sec.6 Interior of sec.8 under Hanover St. Pipe-crossing on sec.3 opp. West St. Some steelwork on sec.10 Pipe-crossing of sec.8 opp. West St. Steelwork of pipe-crossing in Haymarket Sq. Excavation in Haymarket Sq., sec.10, looking northerly Escavation in Haymarket Sq., sec.10, looking southwest Birdseye view of sec.3 View of sec.3 Sec.3 Corner of Tremont + Boylston Street Corner of Tremont & Boylston Streets Corner of Tremont and Boylston Streets Corner of Tremont & Boylston Streets Close-up view of gas lines, including a broken eight-inch line Broken gas pipe corner of Boylston + Tremont Streets Corner of Boylston + Tremont Streets Stairway opening "G", sec.3 Stairway opening "H", sec.3 Stairway opening "F", sec.3 Stairway opening "E", sec.3 Interior of sec.4, looking southerly