Pennsylvania: The New Government Work at Davis Island Dam, Pittsburgh: 1. The Ohio During Low Water. 2. River and Dam During High Water. 3. Working Model of the Dam. 4. The Coffer-Dam for the Land Wall. 5. Constructing the Land Wall. U.S., Engraving 1880 1881
Keywords:
pennsylvania, government, work, davis , isle, island, dam, pittsburgh, ohio, low water, waterway, stream, river dam, high water, working model, dam, coffer-dam, land wall, constructing, land wall, usa, United States, United States of America, engraving 1880s, 1880, 1881
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