View of trolley tracks with workers in the distance View of windows and a door, with a drainpipe on the left side View of wooden framework View of wooden framework View of workers carrying out consruction in two parallel tunnels View of workers on street View showing an incline, probably Commonwealth Ave. Washington St tunnel S from Summer sta. Washington St. tunnel, N-bound track looking S from Summer St. sta. Women at switchboard; map with lights showing system status Wood and steel underground framework Wood and stone abutment showing tracks Wood and stone abutment, showing tracks passing under a bridge Wood pier with block labeled 36 C, 6-S in foreground Wooden docks Wooden docks with tracks to the left Wooden door in brick wall Wooden scaffolding on wall next to railroad tracks, with several workers Wooden structure Worker at a construction site, probably in front of 82-86 West Fourth St. Worker at machine Worker in sec.E east heading south of the shaft looking south Worker standing on a shield sitting on stacks of lumber, also showing brick roofing and tracks Workers at a construction site, showing wood beams and steel rods Workers at a construction site, showing wood beams and steel rods Workers in an open trench, possibly pouring concrete Workers in an open trench, possibly pouring concrete Workers shoveling snow into horse drawn wagon Workers standing on and around a platform supporting a crane Wrought iron gate and stone columns, with pedestrians and children on the other side Wrought-iron fence in front of stone building __ looking N from S of Circuit St __ St. sta, progress on stairs, W loop ___ Hills Sq _____ Washington St. [men working on above ground T rail] Anderson Street looking up from Phillips Street Park St. under redline People walking over ventilation grating Breakwater Storefront of Thomas A. Brook + Co., Tailors Bonding tests Public Garden from Boylston St. 8 Summer Street Construction looking across Fens Underground track Underground construction Stairway covering Boston Common Elevator door, top floor #100 Champagne St. W+A Bacon Co. entrance Centre wall under stony Brook Conduit