Sudbury River Conduit, B.W.W. Div.4, Sec 15, Sept. 13 1876, view of cutting of large arch taken from east bank of Charles River.

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Sept. 13, 1876. View of centring of arch "A" taken from Ellis St. and looking north.

B.W.W. Dam Division. Dam III, south centre wall and 8" permanent sheeting looking north, June 14, 1877.

B.W.W. dam division, Dam III, temporary sheeting for north center wall, looking north, July 14, 1877.

Sudbury River Conduit, B.W.W. div. 4, sec 15, Aug. 17 1876, lower part of centering of great arch.

B.W.W. div. 1, sec A, Winter Street bridges and conduit below Dam I, and excavation for river wall, July 14, 1877.

Sudbury River Conduit, B.W.W. div.4, sec 15, Aug. 17 1876, north side of arch "G", Ellis St.

Sudbury River Conduit, B.W.W. div.4, sec 15, Aug. 17 1876, view of Charles River bridges taken from Newton side and looking west.

Sudbury River Conduit, B.W.W. div.4, sec 15, Aug. 17 1876, view of Charles River bridges taken from Needham side, looking east.

B.W.W. dam division, Dam II, temporary sheeting fro outer wall, north side of gate house, July 14th, 1877.

B.W.W. dam division, view showing excavation for gate house foundation and foundation wall of overflow at Dam II, Junly 14, 1877.

Sudbury River Conduit, B.W.W. div.4, sec 15, May 13 1876, view of the east bank of Charles River from the Needham side.