Wachusett Aqueduct, Opening gates of Wachusett Aqueduct at cofferdam, from the southwest; Chief Engineer Frederic P. Stearns with many engineers, Clinton, Mass., Mar. 7, 1898

Wachusett Aqueduct, Opening gates of Wachusett Aqueduct at cofferdam, from the southwest; Chief Engineer Frederic P. Stearns with many engineers, Clinton, Mass., Mar. 7, 1898

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