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The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "Junction of the Allegheny and Monongahela Rivers to form the Ohio. Pittsburgh, Pennsylvania" The New York Public Library Digital Collections. 1938. https://digitalcollections.nypl.org/items/7f511f50-b979-0138-0a1a-51938f922275
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "Junction of the Allegheny and Monongahela Rivers to form the Ohio. Pittsburgh, Pennsylvania" New York Public Library Digital Collections. Accessed January 17, 2025. https://digitalcollections.nypl.org/items/7f511f50-b979-0138-0a1a-51938f922275
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. (1938). Junction of the Allegheny and Monongahela Rivers to form the Ohio. Pittsburgh, Pennsylvania Retrieved from https://digitalcollections.nypl.org/items/7f511f50-b979-0138-0a1a-51938f922275
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(still image)
Junction of the Allegheny and Monongahela Rivers to form the Ohio. Pittsburgh, Pennsylvania, (1938)|author=Digital Collections, The New York Public Library |accessdate=January 17, 2025 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>