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© The New York Public Library, 2024
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Photographs of the Catskill water supply system in process of construction
General Research Division, The New York Public Library. "Silver Lake reservoir. View showing method of building earth dikes. ... Contract 89. May 14, 1914." The New York Public Library Digital Collections. 1918. https://digitalcollections.nypl.org/items/510d47da-dd72-a3d9-e040-e00a18064a99
General Research Division, The New York Public Library. "Silver Lake reservoir. View showing method of building earth dikes. ... Contract 89. May 14, 1914." New York Public Library Digital Collections. Accessed April 20, 2024. https://digitalcollections.nypl.org/items/510d47da-dd72-a3d9-e040-e00a18064a99
General Research Division, The New York Public Library. (1918). Silver Lake reservoir. View showing method of building earth dikes. ... Contract 89. May 14, 1914. Retrieved from https://digitalcollections.nypl.org/items/510d47da-dd72-a3d9-e040-e00a18064a99
<ref name=NYPL>{{cite web | url=https://digitalcollections.nypl.org/items/510d47da-dd72-a3d9-e040-e00a18064a99 | title=
(still image)
Silver Lake reservoir. View showing method of building earth dikes. ... Contract 89. May 14, 1914., (1918)|author=Digital Collections, The New York Public Library |accessdate=April 20, 2024 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>