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Image ID: 435334
Ashokan Reservoir. Placing first concrete block on down-stream face of Olive Bridge dam. Note grouting machine at work ...
NYPL Digital Gallery provides free and open access to over 800,000 images digitized from primary sources and printed rarities in the vast collections of The New York Public Library, including drawings, illuminated manuscripts, historical maps, vintage posters, rare prints and photographs, illustrated books, printed ephemera, and more.