Heading and shield from upper deck Arch, looking east, sec.1 Upper level, sta.22+25, sec.2, looking east Bracing, southerly drift, sta.20+50, sec.2, looking east Open cut in Common west of Old Subway, looking northerly Showing west sidewall of Old Subway, drifts, bracing etc. Showing west wall of Old Subway and drifts, looking east Excavating in open cut just west of Old Subway Excavating and drift under Old Subway Excavating beside and under Old Subway for New Station Northerly sidewall duift under Old Subway showing timbering looking east Timbering under west wall of Old Subway Arch at sta.21+39.50, sec.2, looking westerly Southerly part of arch at sta.21+39.50 looking westerly Northerly part of arch at sta.21+39.50, sec.2 Bed of clear sand dividing mass of bolder, clay, till, sta.21+60, sec.2 Supporting a 30" water pipe over the tunnel during construction, sec.2 Building new station under Park St. station of Old Subway Arch lagging before waterproofing sta.22+50, sec.2 Southerly half of arch after removal of centers sta.21+20, sec.2 Excavating of the core of the tunnel, sta.20 B.H. tunnel, sec.1, sta.2+40, looking westerly Beacon Hill Tunnel, sec.1, sta.16-50, looking easterly North sidewall sta.21+11-12, sec.2 North sidewall sta.21+32-34, sec.2 Sec.1, BH Tunnel from sta. 17, looking westerly Sec.1, BH Tunnel from sta. 18, looking westerly Sec.1, BH Tunnel, looking westerly Tremont Street sidewalk from Hamilton Place to Winter Street, Boston, Mass., March 30, 1911 Tremont Street sidewalk from 127 to corner of Winter Street, Boston, Mass., March 30, 1911 Tremont Street sidewalk from Winter Street to Hamilton Place, Boston, Mass., March 30, 1911 Winter Street, sidewalk, north side, looking east from Tremont Street, Boston, Mass., March 30, 1911 Winter Street, sidewalk, south side, looking east from Tremont Street, Boston, Mass., March 30, 1911 Tremont St. sidewalk from St. Paul's to Winter Street, Boston, Mass., March 30, 1911 Store front at southeast corner Winter and Tremont Streets, Boston, Mass., April 6, 1911 Southeast corner Winter and Tremont Streets, Boston, Mass., April 6, 1911 Southeast corner Winter and Tremont Streets, Boston, Mass., April 6, 1911 Work on sec.2, BHT, in Boston Common Beacon Hill Tunnel, sec.1, looking west toward the turn arches Making pipe changes in Tremont St. near Winter St., sec.2, looking north Making pipe changes in Tremont St. near Winter St. Making pipe changes in Tremont St. near Winter St. Sec.2, Beacon Hill tunnel, roof beams sta.23 to sta.24 Roof beams sta.23 Roof beams sta.23 Section 1,BHT, looking southeasterly Looking northwesterly from sta 5 Sec.2, BHT changes being made for permanent support of part of east wall, Park St., subway station Looking southeasterly from sta.16+75 Looking southeasterly from sta.5
