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cofferdams

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Boston water works, Sudbury River Conduit, November 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, November 6th, 1876, Divisio...

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... Еще

Бостонский водопроводный завод, Садбери Ривер Кондуит, 6 ноября 1876 года, отдел 1, секция 1, вид на фундамент дома у ворот Ферм-Понд, вид на северный угол плотины Коффер.

Бостонский водопроводный завод, Садбери Ривер Кондуит, 6 ноября 1876 г...

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... Еще

Boston water works, Sudbury River Conduit, November 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, November 6th, 1876, Divisio...

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... Еще

[Boston water works, Sudbury River Conduit, Nov. 6, 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. 6, 1876, Division 1, ...

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... Еще

Бостонский водопроводный завод, Садбери Ривер Кондуит, 6 ноября 1876 года, отдел 1, секция 1, вид на фундамент дома у ворот Ферм-Понд, вид на северный угол плотины Коффер.

Бостонский водопроводный завод, Садбери Ривер Кондуит, 6 ноября 1876 г...

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... Еще

Boston water works, Sudbury River Conduit, November 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, November 6th, 1876, Divisio...

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... Еще