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Photographs of General Motors and Chrysler car and truck models
General Research Division, The New York Public Library. "94-year old Mrs. H. L. Downey, of Lansing, Mich., known as the Grandmother of the Automobile Industry formally opened Detroit's annual auto show." The New York Public Library Digital Collections. 1902 - 1938. https://digitalcollections.nypl.org/items/510d47db-b80f-a3d9-e040-e00a18064a99
General Research Division, The New York Public Library. "94-year old Mrs. H. L. Downey, of Lansing, Mich., known as the Grandmother of the Automobile Industry formally opened Detroit's annual auto show." New York Public Library Digital Collections. Accessed February 2, 2025. https://digitalcollections.nypl.org/items/510d47db-b80f-a3d9-e040-e00a18064a99
General Research Division, The New York Public Library. (1902 - 1938). 94-year old Mrs. H. L. Downey, of Lansing, Mich., known as the Grandmother of the Automobile Industry formally opened Detroit's annual auto show. Retrieved from https://digitalcollections.nypl.org/items/510d47db-b80f-a3d9-e040-e00a18064a99
<ref name=NYPL>{{cite web | url=https://digitalcollections.nypl.org/items/510d47db-b80f-a3d9-e040-e00a18064a99 | title=
(still image)
94-year old Mrs. H. L. Downey, of Lansing, Mich., known as the Grandmother of the Automobile Industry formally opened Detroit's annual auto show., (1902 - 1938)|author=Digital Collections, The New York Public Library |accessdate=February 2, 2025 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>