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© The New York Public Library, 2026
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The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "New type of plating machine being used at the Hamilton Standard Propeller Corporation. It automatically dips the part into the proper solutions for the proper lengths of time. East Hartford, Connecticut." The New York Public Library Digital Collections. 1940. https://old-digitalcollections.nypl.org/items/2e607720-069f-013e-e3a1-0242ac110003
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. "New type of plating machine being used at the Hamilton Standard Propeller Corporation. It automatically dips the part into the proper solutions for the proper lengths of time. East Hartford, Connecticut." New York Public Library Digital Collections. Accessed October 8, 2026. https://old-digitalcollections.nypl.org/items/2e607720-069f-013e-e3a1-0242ac110003
The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Photography Collection, The New York Public Library. (1940). New type of plating machine being used at the Hamilton Standard Propeller Corporation. It automatically dips the part into the proper solutions for the proper lengths of time. East Hartford, Connecticut. Retrieved from https://old-digitalcollections.nypl.org/items/2e607720-069f-013e-e3a1-0242ac110003
<ref name=NYPL>{{cite web | url=https://old-digitalcollections.nypl.org/items/2e607720-069f-013e-e3a1-0242ac110003 | title=
(still image)
New type of plating machine being used at the Hamilton Standard Propeller Corporation. It automatically dips the part into the proper solutions for the proper lengths of time. East Hartford, Connecticut., (1940)|author=Digital Collections, The New York Public Library |accessdate=October 8, 2026 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>