Sudbury River Conduit, B.W.W., div. 4, sec. 17, Nov. 13, 1876. View near rock-cut showing ledgemen in the foreground and brickmasons in the background.

Sudbury River Conduit, B.W.W., div. 4, sec. 17, Nov. 13, 1876. View of brickmason gang, near rock cut, west of Walnut St.

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Oct. 18, 1876. View of central portion of large centring showing jack screws.

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Oct. 18, 1876. View taken from the top of arch "D" and looking west.

Sudbury River Conduit, B.W.W., div. 4, sec. 16, Oct. 18, 1876. View taken on top of bridge and looking east.

Sudbury River Conduit, B.W.W., div. 4, sec. 16, Oct. 18, 1876. View taken at the west end of narrow rock cut looking east.

Sudbury River Conduit B.W.W. div.4, sec 14 Oct. 14, 1876, view taken from Sta. 593+37 looking east on Hurd's Hill.

Sudbury River Conduit, B.W.W., div. 4, sec. 16, Oct. 18, 1876. View taken at the east end of rock cut looking west.

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Oct. 18, 1876. View of south and east sides of east abutment of large arch.

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Oct. 18, 1876. View of south and east sides of east abutment of large arch.

Sudbury River Conduit, B.W.W., div. 4, sec. 14, Oct. 18, 1876. View taken from inside conduit looking west on [?] embankment.

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Oct. 18, 1876. View taken on the east bank of Charles River showing north side of centering of arch "A".

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Oct. 18, 1876. North side of arch "G" with face brickwork overhead.

Sudbury River Conduit, B.W.W., div. 4, sec. 14, Oct. 18, 1876. View taken at the west end of rock cut on sec. 14 and looking east.

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Oct. 18, 1876. View from Needham bank of Charles River showing the north side of bridge.

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Oct. 18, 1876. View from Needham bank of Charles River showing the north side of bridge.

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Oct. 18, 1876. View of large centring from east bank of river showing south side (2nd view).

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Sept. 13, 1876. View showing interior structure of Charles River Bridge over arches "F" & "G".

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Sept. 13, 1876. View showing interior structure of Charles River Bridge over arches "F" & "G".

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Sept. 13, 1876. Vie of centring of arch "A" (when almost completed) from east bank of river and looking down stream.