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© The New York Public Library, 2024
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Stereoscopic views of the oil region of Pennsylvania and New York.
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "Source of the world's most gigantic fortune, pumping wells in the oil country, Pennsylvania." The New York Public Library Digital Collections. 1850 - 1930. https://qa-digitalcollections.nypl.org/items/510d47e2-57d6-a3d9-e040-e00a18064a99
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "Source of the world's most gigantic fortune, pumping wells in the oil country, Pennsylvania." New York Public Library Digital Collections. Accessed December 14, 2024. https://qa-digitalcollections.nypl.org/items/510d47e2-57d6-a3d9-e040-e00a18064a99
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. (1850 - 1930). Source of the world's most gigantic fortune, pumping wells in the oil country, Pennsylvania. Retrieved from https://qa-digitalcollections.nypl.org/items/510d47e2-57d6-a3d9-e040-e00a18064a99
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(still image)
Source of the world's most gigantic fortune, pumping wells in the oil country, Pennsylvania., (1850 - 1930)|author=Digital Collections, The New York Public Library |accessdate=December 14, 2024 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>