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 southerly on sec. 4 from Boylston Street, time 5:30 a.m. Looking up Tremont St. from Scollay Sq., sec.6 (Time 5:10a.m.) Looking towards Scollay Square on Tremont Street, sec. 6, time 5:00 a.m., Boston, Mass. Looking southerly on sec. 4 from Boylston Street, time 5:25 a.m. Steelwork on sec. 3, looking northeast Dump in Court St. sec. 6, looking east Some steel work on sec. 3, looking northerly Steel work on sec.3, looking N.E. Excavating on sec.3, looking northerly Dump in Court St., sec.6, looking east Pedestal for trolley pole on roof of subway Pedestal for trolley pole on roof of subway after waterproofing Pulling a 2" boring pipe Boring scow and outfit 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 Pipe crossing at Tremont opposite Warrenton St. Interior of sec.4 near Boylston Street, refuge niches Interior of sec.4 arch of one track subway Pipe crossing at Tremont St. and Shawmut Ave. opp Warrenton Pipe changings at Dock Sq. Sec.10 Washington St. looking toward Haymarket Sq. Sec.6, corner of Tremont and Park Streets Pipe changes in Dock Square Relocation of 18" gas pipe in Dock Sq. Relocation of 18" gas pipe in Dock Sq. New location of 30" water pipe in Tremont St. east side looking south between Boylston + LaGrange Sts. Relocation of 30" water pipe east side Tremont St. between Boylston and Lag range Sts. Relocation of 30" Water Pipe Tremont St. near LaGrange St. Bridging under Tremont St. tracks, changes near Pleasant St. Changes in subway near Pleasant St. Bridging Pleasant St. entrance Changes in subway near Pleasant St., Erecting trestle for surface cars, west side Plesant St. entrance Changes sec.5 bridging under Shawmut Ave. tracks Excavating under e'ly tracks changes near Pleasant St. Excavating under Shawmut Ave. track changes near Pleasant St. New location 30" water pipe east side Tremont St. between Boylston and Lagr sec.4 New location 30" water pipe Tremont St. between Boylston and Lagrange Sts. looking north Pleasant St.