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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/7f780010-b979-0138-add2-0003da3a1477
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 March 14, 2025. https://digitalcollections.nypl.org/items/7f780010-b979-0138-add2-0003da3a1477
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/7f780010-b979-0138-add2-0003da3a1477
<ref name=NYPL>{{cite web | url=https://digitalcollections.nypl.org/items/7f780010-b979-0138-add2-0003da3a1477 | title=
(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=March 14, 2025 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>