| Boston water works, Dam no. 1, Sudbury River. |  |  | 
					
				| Oct. 31, 1877. View of connection of Sudbury River pipeline with 48" outer pipe at effluent gate house, of Chestnut Hill Reservoir, looking west. |  |  | 
					
				| Oct. 31, 1877. View of gates on Sudbury River pipeline below effluent gate house, Chestnut Hill Reservoir, looking south. |  |  | 
					
				| Water works, Newton, Mass. |  |  | 
					
				| View of gates on Sudbury River pipeline below effluent gate house, Chestnut Hill Reservoir, looking south. Oct. 31, 1877. |  |  | 
					
				| Connection of the Sudbury River pipeline with 48" outer pipe at effluent gate house, of Chstnut Hill Reservoir, looking east. Oct. 31, 1877. |  |  | 
					
				| View showing brickmasons and equipment. |  |  | 
					
				| Water works, Newton, Mass. |  |  | 
					
				| Water works, Newton, Mass. |  |  | 
					
				| Water works, Newton, Mass. |  |  | 
					
				| Water works, Newton, Mass. |  |  | 
					
				| Water works, Newton, Mass. |  |  | 
					
				| Sudbury River Conduit, B.W.W., div. 4, sec. 15, Nov. 13, 1876. Brickmason gang at the east end of section 16. |  |  | 
					
				| Sudbury River Conduit, B.W.W., div. 4, sec. 15, Nov. 13, 1876. View taken below bridge from Newton side, showing the six completed arches. |  |  | 
					
				| Sudbury River Conduit, B.W.W., div. 4, sec. 15, Nov. 13, 1876. View of south side of east abutment of arch "A", and of arches "C" and "D". |  |  | 
					
				| Sudbury River Conduit, B.W.W., div. 4, sec. 15, Nov. 13, 1876. View from inside of conduit; brickmasons at work in the east terminal chamber of bridge. |  |  | 
					
				| Sudbury River Conduit, B.W.W., div. 4, sec. 15, Nov. 13, 1876. South side of bridge from Newton side (centerings of arches "F" and "G" removed). |  |  | 
					
				| Water works, Newton, Mass. |  |  | 
					
				| Sudbury River Conduit, B.W.W., div. 4, sec. 15, Nov. 13, 1876. View of south side view of arches "A" and "C" with centrings. |  |  | 
					
				| Water works, Newton, Mass. |  |  | 
					
				| Water works, Newton, Mass. |  |  | 
					
				| Sudbury River Conduit, B.W.W., div. 4, sec. 15, Nov. 13, 1876. View of south side of east abutment of large arch with half of arches "A" and "C". |  |  | 
					
				| Sudbury River Conduit, B.W.W., div. 4, sec. 15, Nov. 13, 1876. View of arches "A," "C," "D," and "E" with centrings from house above Ellis St. |  |  | 
					
				| View of an unidentified structure with a turret. |  |  | 
					
				| Sudbury River Conduit, B.W.W., div. 4, Nov. 13, 1876. View inside of engineer's office at Newton Upper Falls, Mass. |  |  | 
					
				| View of an unidentified building, horse and buggy in front. |  |  | 
					
				| View of two people sitting on a small, completed arch. |  |  | 
					
				| Sudbury River Conduit. B.W.W. Div. 4, Sec. 16 Nov. 14, 1876, view at east end of Sec. 16 showing excavating con..., stone and brick masons. |  |  | 
					
				| Sudbury River Conduit, B.W.W., div. 4, sec. 17, Nov. 13, 1876. View near rock-cut on sec. 17 showing ledgemen in the foreground and brickmasons in the background. |  |  | 
					
				| 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. |  |  |