Boring gang drilling on Washington St.

Steel-work on sec.3, looking southerly

Changing pipes in Tremont Street at corner of Hollis

Steel-work on sec.2 looking northeasterly

Work on sec.2 looking southerly

Boring tools on Scow

Birdseye view of sec.3

Birdseye view of sec.2, looking westerly

Stone posts on incline in Public Garden

Pipe crossing at Tremont and (?) Avenue

Pipe crossing at Tremont

Iron-work in Public Garden

Looking towards Charles Street in Public Garden showing iron-work

Incline showing iron-work on roof

Looking east on Boylston Street Mall of Common, Boston, Mass., October 7, 1895

Interior of subway, Boylston Street mall

Details of iron-work, Boylston Street subway near Station 9+0

Iron-work on section 1, Tremont Street mall

Iron-work for 16" water pipe crossing near Park Square entrance of the Common

Pipes 3 1/4

Pipes near Boylston Street

Pipes near Boylston Street

Looking east on Boylston Street Mall of Common, Boston, Mass., November 18, 1895

Row of intermediate columns in four track subway, Tremont Street mall of Common

Fourtrack subway, interior before completed Section 1

Work on Section 3 1/4 corner of Park and Tremont Streets

Section 2 construction

Section 2

Untitled

Sand (land?) heater on Common

Iron-work crossing western part of Charles Street looking east from Public Garden

Tremont Street (?)

Untitled

Iron-work on Tremont Street mall, looking north, section 1

Traffic on Eliot Street

Execavation for ventilating chamber at section 1 Tremont Street mall of Common

Bracing in trench at section 2 on Boylstion Street mall, looking westerly

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)