- The Library Shop
- Privacy Policy
- Rules and Regulations
- Using the Internet
- Website Terms and Conditions
- Gifts of Materials to NYPL
-
© The New York Public Library, 2024
The New York Public Library is a 501(c)(3) | EIN 13-1887440
Photographs of the Catskill water supply system in process of construction
General Research Division, The New York Public Library. "Surveys. Taking cross-section with sunflower instrument in the City tunnel south of Shaft 16 after trimming had been done. March 14, 1913." The New York Public Library Digital Collections. 1918. https://qa-digitalcollections.nypl.org/items/510d47da-de20-a3d9-e040-e00a18064a99
General Research Division, The New York Public Library. "Surveys. Taking cross-section with sunflower instrument in the City tunnel south of Shaft 16 after trimming had been done. March 14, 1913." New York Public Library Digital Collections. Accessed December 4, 2024. https://qa-digitalcollections.nypl.org/items/510d47da-de20-a3d9-e040-e00a18064a99
General Research Division, The New York Public Library. (1918). Surveys. Taking cross-section with sunflower instrument in the City tunnel south of Shaft 16 after trimming had been done. March 14, 1913. Retrieved from https://qa-digitalcollections.nypl.org/items/510d47da-de20-a3d9-e040-e00a18064a99
<ref name=NYPL>{{cite web | url=https://qa-digitalcollections.nypl.org/items/510d47da-de20-a3d9-e040-e00a18064a99 | title=
(still image)
Surveys. Taking cross-section with sunflower instrument in the City tunnel south of Shaft 16 after trimming had been done. March 14, 1913., (1918)|author=Digital Collections, The New York Public Library |accessdate=December 4, 2024 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>