Test of tranverse strength of a 6" gas of pipe Test of tranverse strength of a 6" gas of pipe Test of tranverse strength of a 6" gas of pipe Tracks going left with wallpapers sign in upper right Tracks in front of a building with a sign for Ernst Zimmermann, photographer Train passing on parallel railroad tracks running into the distance Tunnel with tracks going left & a ladder on the right side Two newsboys standing on ventilation grates Two small doorways with stripes Two workers at the site of construction of a tunnel arch, also showing wood and steel beams Two workers in sec.E east heading south of the shaft looking south Two workers standing with a section of pipe, probably special sewer pipe Underground construction site, showing beams, a ladder, and workers Underground construction work in a tunnel showing concrete and rubble Underground construction work in a tunnel showing concrete and rubble Underground construction work in a tunnel, showing equipment, concrete, and columns Underground construction work in a tunnel, showing equipment, concrete, and columns Underground tunnels with left one lit Ventilation chamber at the Fens Ventilation chamber at the Fens, showing the reflection in the water Very faded view of a residential building with two doors next to each other Vew inside a tunnel showing steel and concrete roofing, steel framework, and parallel tracks View into garagewith Edison sign behind View of street corner with four people View of a billboard between two buildings, one of which hosues a barbershop View of a building with a barbershop on the first floor View of a building, with in-street tracks in the foreground, possibly 8-10 Boylston St. View of a building, with in-street tracks in the foreground, possibly 8-10 Boylston St. View of a snowy yard in the rear of houses, with two blurry figures in the foreground View of a three-story residential building with three entrances View of a wall next to railroad tracks passing under a bridge View of a wall next to railroad tracks passing under a bridge View of bench in a tree-lined path next to a road View of building with advertising graffiti View of construction in the middle of a street, showing works and machinery View of construction showing wood beams and a crane View of construction showing wood beams and a crane View of construction site between a wall and mound of dirt Looking left into arched tunnel entrance Looking northerly in western side wall trench, sec 9 Looking northerly showing temporary bridge for loading cars with earth from subway Looking out of two parallel subway tunnels Looking slightly left out of tunnel Looking southerly from sec 10 at half of sec 9 heading Machinery of Metropolitan Construction Co, in front of Wyman dentist office Men standing at construction site in front of J.C. Parker, druggist, 232 Tremont and Eliot Streets, Boston, Mass. Men working in a tunnel in the background, with beams in the foreground & to the right Men working in a tunnel with shovels Men working on moving dirt with wheelbarrow Metal fence in front of brick building