Wall between 14-16 Barton St. Wall between 14-16 Barton St. Underpinning party wall between 6+8 Lowell St. Underpinning party wall between 6+8 Lowell St. Underpinning party wall between 6+8 Lowell St. Causeway St. opposite North Station Steel erection North Station New steel work opposite North Station New steel work North Station Progress view on steel erection North Station Props and showing on building Billerica near Causeway St. Progress on steel erection North Station Lechmere Sq. Progress on steelwork North Station North Station, progress on steelwork North Station, progress view Foor bridge through B+M cabstand, North Station North Station, progress view Progress view opposite North Station North Station, subway incline Lechmere Sq. incline Progress view North Station Progress view North Station Progress view North Station Progress at North Station Progress view North Station galleries etc. Progress view North Station Charles River Bridge bunter at draw 12 Lowell St. 12 Lowell St. from top of elevated railway structure Charles River Bridge Lechmere Sq. incline frozen concrete Lechmere Sq., effects of frost Looking north on Tremont Street mall second row, beginning at 163, Boston, Mass. Birdseye view looking westerly from Walker's Building Looking east in Public Garden Four track on Tremont Street mall Work on Boylston Street mall of Common, Boston, Mass., April 24, 1895 Grave in Central Burying Ground Looking west from Charles Street into the Public Garden Looking east on the Boylston Street mall from the Park Square entrance to Common Looking southerly in 4 track subway under Tremont Street mall, showing cons truction Looking east on Boylston Street Mall of Common, Boston, Mass., May 2, 1895 Northerly entrance to gas pipe tunnel on sec.13 E. Cambridge near Lechemere Sq. between Cambridge and Bridge Sts. South side of Causeway, west side of Canal Street, Boston, Mass. Charles River Bridge Foundation 4 South side of Causeway Street, Boston, Mass. South side of Causeway Street, west side of Friend Street, Boston, Mass. South side of Causeway Street, east corner Portland Street, Boston, Mass.