Erie Canal: Locks and dams at Amsterdam and Tribes Hill

Contract 17. A photo of the south span cofferdam and Lock 11 cofferdam at Dam 7 in Amsterdam, New York.
Date Original
December 31 1907
New York State Archives. New York (State). State Engineer and Surveyor. Barge Canal construction photographs. 11833-97. Contract 17, p. 31, no. 1.
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