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NYC Water: Topographical map showing the entire watershed of Croton River above the Croton Aqueduct Dam: also the most available sites for storage reservoirs, from surveys made during 1857 and 1858. 1905.
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NYC Water: Part of Central Park showing proposed Gate House for New Croton Aqueduct, January 3, 1888.
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NYC Water: Present municipal service areas and territory served by private water companies, 1915
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NYC Water: Map of New York City water supply system. October 1917.
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NYC Water: The Water Supply of the City of New York. 1938.
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NYC Water: New York City water supply system. Circa 1950.
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NYC Water: New York City's Water Supply System. 2017.
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NYC Water: New York City's Water Story: From Mountain Top to Tap. 2016.