Washington elm, Cambridge, Mass.

Washington elm, Cambridge, Mass.

Washington's headquarters in Cambridge.

Washington's headquarters in Cambridge.

Washington's headquarters in Cambridge.

The law library, Cambridge, Mass.

The law library, Cambridge, Mass.

The law library, Cambridge, Mass.

The law library, Cambridge, Mass.

The astronomical observatory, Cambridge, Mass.

Harvard College building.

Cambridge College.

House in Cambridge.

Harvard College, Gore Hall.

Prof. Longfellow, Cambridge, Mass.

Iron bridge.

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. 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. 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.

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. 15, Oct. 18, 1876. View of south and east sides of east abutment of large arch.