Boston water works, Sudbury River Conduit, Nov. 6th, 1876, Division 1, Section 1, view of Farm Pond gate house foundations, looking towards northeast corner of coffer dam.

Boston water works, Sudbury River Conduit, Nov. 6th, 1876, Division 1, Section 1, view of Farm Pond gate house foundations, showing west end of coffer dam.

Boston water works, Sudbury River Conduit, Nov. 6th, 1876, Division 1, Section 1, view of Farm Pond gate house foundations, showing west end of coffer dam.

Boston water works, Sudbury River Conduit, Sept. 1876, Dam III, Rubble masonry foundations, southeast corner of gate house.

View of men working on the foundation of a house.