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The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "Great stone viaduct (over the Patapsco River) at "Washington Junction" by which the Washington Branch" of the Baltimore & Ohio Railroad crosses the river, nine miles from Baltimore." The New York Public Library Digital Collections. 1860. https://digitalcollections.nypl.org/items/510d47e0-65ba-a3d9-e040-e00a18064a99
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "Great stone viaduct (over the Patapsco River) at "Washington Junction" by which the Washington Branch" of the Baltimore & Ohio Railroad crosses the river, nine miles from Baltimore." New York Public Library Digital Collections. Accessed March 24, 2025. https://digitalcollections.nypl.org/items/510d47e0-65ba-a3d9-e040-e00a18064a99
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. (1860). Great stone viaduct (over the Patapsco River) at "Washington Junction" by which the Washington Branch" of the Baltimore & Ohio Railroad crosses the river, nine miles from Baltimore. Retrieved from https://digitalcollections.nypl.org/items/510d47e0-65ba-a3d9-e040-e00a18064a99
<ref name=NYPL>{{cite web | url=https://digitalcollections.nypl.org/items/510d47e0-65ba-a3d9-e040-e00a18064a99 | title=
(still image)
Great stone viaduct (over the Patapsco River) at "Washington Junction" by which the Washington Branch" of the Baltimore & Ohio Railroad crosses the river, nine miles from Baltimore., (1860)|author=Digital Collections, The New York Public Library |accessdate=March 24, 2025 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>