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The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "Operating one of the big rollers in production of sheet steel. Pittsburgh, Pennsylvania" The New York Public Library Digital Collections. 1938. https://digitalcollections.nypl.org/items/8fb5f3f0-b979-0138-2da5-79c19c56a14e
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "Operating one of the big rollers in production of sheet steel. Pittsburgh, Pennsylvania" New York Public Library Digital Collections. Accessed April 27, 2024. https://digitalcollections.nypl.org/items/8fb5f3f0-b979-0138-2da5-79c19c56a14e
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. (1938). Operating one of the big rollers in production of sheet steel. Pittsburgh, Pennsylvania Retrieved from https://digitalcollections.nypl.org/items/8fb5f3f0-b979-0138-2da5-79c19c56a14e
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(still image)
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