Distribution Department, Boston Elevated Railway, Central Power Station, 4-inch cast-iron service pipe from Harrison Avenue to CPS of the Boston Elevated Railway, age 38 years (laid 1866), exposed to electrolysis 14 years; taken up 1904, Boston, Mass., Dec. 1904

Distribution Department, Boston Elevated Railway, Central Power Station, 4-inch cast-iron service pipe from Harrison Avenue to CPS of the Boston Elevated Railway, age 38 years (laid 1866), exposed to electrolysis 14 years; taken up 1904, Boston, Mass., Dec. 1904

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