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© The New York Public Library, 2026
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Lionel Pincus and Princess Firyal Map Division, The New York Public Library. "Topographical map of Union County, New Jersey" The New York Public Library Digital Collections. 1862. https://old-digitalcollections.nypl.org/items/ac523520-0c2e-0135-9d1c-1f56a1143694
Lionel Pincus and Princess Firyal Map Division, The New York Public Library. "Topographical map of Union County, New Jersey" New York Public Library Digital Collections. Accessed September 27, 2026. https://old-digitalcollections.nypl.org/items/ac523520-0c2e-0135-9d1c-1f56a1143694
Lionel Pincus and Princess Firyal Map Division, The New York Public Library. (1862). Topographical map of Union County, New Jersey Retrieved from https://old-digitalcollections.nypl.org/items/ac523520-0c2e-0135-9d1c-1f56a1143694
<ref name=NYPL>{{cite web | url=https://old-digitalcollections.nypl.org/items/ac523520-0c2e-0135-9d1c-1f56a1143694 | title=
(cartographic)
Topographical map of Union County, New Jersey, (1862)
|author=Digital Collections, The New York Public Library |accessdate=September 27, 2026 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>