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Sudbury River Conduit, B.W.W., div. 4, Nov. 13, 1876. View inside of engineer's office at Newton Upper Falls, Mass.

Sudbury River Conduit, B.W.W., div. 4, Nov. 13, 1876. View inside of e...

Boston Massachusetts stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yo... More

Sudbury River Conduit, B.W.W., div. 4, Nov. 13, 1876. View inside of engineer's office at Newton Upper Falls, Mass.

Sudbury River Conduit, B.W.W., div. 4, Nov. 13, 1876. View inside of e...

Boston Massachusetts stereoscopic card. Robert Dennis's stereographs collection includes more than 72,000 stereoscopic views organized primarily by geography. The collection bears the name of the native New Yo... More

Sudbury River Conduit, B.W.W., div. 4, Nov. 13, 1876. View inside of engineer's office at Newton Upper Falls, Mass.

Sudbury River Conduit, B.W.W., div. 4, Nov. 13, 1876. View inside of e...

Picryl description: Public domain image of the back of stereograph card, stereoscopic view, free to use, no copyright restrictions

Sudbury River Conduit, B.W.W., div. 4, Nov. 13, 1876. View inside of engineer's office at Newton Upper Falls, Mass.

Sudbury River Conduit, B.W.W., div. 4, Nov. 13, 1876. View inside of e...

Picryl description: Public domain image of the back of stereograph card, stereoscopic view, free to use, no copyright restrictions