Excavation at section 3, looking northerly Tunnel for 24" x 12" gas pipes at section 3 Cave-in of trench for water conduit at section 2, looking easterly Cave-in of trench for water conduit at section 2, looking southerly Looking northerly on section 3 from near West Street foot-bridge Looking west at trench in section 2 showing bracing etc. Gas pipe tunnel at section 3, looking northerly Looking west on Boylstion Street mall, section 2 Looking easterly on section 2 showing bracing, screening apparatus, etc.(Tremont Street) Raising a 30" water pipe on Tremont Street looking northerly from near Eliot Street Raising a 30" water pipe on Tremont Street looking northerly from near Eliot Street Some bracing on section 2 looking west (Tremont Street) Looking easterly on section 2 showing machinery (Tremont Street) 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 Tree 233 Looking northerly on Tremont St. sec.4 Concrete mixer on sec.2 in operation Excavating on sec.2, looking southerly Work on sec.3, looking northerly Relocating water pipes in Tremont St. opp. Children's Museum - looking North Steel-work on sec.2, looking easterly Steel-work on sec.2, looking west Sec.2: steel-work of sub-subway looking westerly Grading on common, looking easterly Bracing on sec.2, looking northerly Enclosure in Court St., looking east, sec.6 Curb on Tremont St. from La Grange St. looking north Curb on Tremont St. from Seaver Place, looking north Buildings earth conveyor on Tremont St. sec.6 Tremont St. looking north showing amount of street occupied(Heliotype Printing Co. of Boston) Steel-work on sec.2, looking westerly Curb on Tremont Street from Van Rensselaer Place, looking north, Boston, Mass., May 27, 1896 Sub-subway on sec.2, looking westerly Nine ton girder on sec.2, looking southeasterly Looking southerly on sec.3, showing concrete Sec. 6 in Tremont Street looking towards Scollay Square, time-2:15, Boston, Mass. Excavating on sec. 3, looking northerly Walk in front of Hotel Holyoke on east side of Tremont St. looking north Walk in front of Hotel Holyoke on Tremont St., looking southerly Looking east in Public Garden