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Manuscripts and Archives Division, The New York Public Library. "Group portrait of party taken by Spencer Trask to show Lord Kelvin the General Electric Works, Schenectady, N.Y." The New York Public Library Digital Collections. 1870 - 1909. https://digitalcollections.nypl.org/items/5e66b3e8-6ffd-d471-e040-e00a180654d7
Manuscripts and Archives Division, The New York Public Library. "Group portrait of party taken by Spencer Trask to show Lord Kelvin the General Electric Works, Schenectady, N.Y." New York Public Library Digital Collections. Accessed March 19, 2024. https://digitalcollections.nypl.org/items/5e66b3e8-6ffd-d471-e040-e00a180654d7
Manuscripts and Archives Division, The New York Public Library. (1870 - 1909). Group portrait of party taken by Spencer Trask to show Lord Kelvin the General Electric Works, Schenectady, N.Y. Retrieved from https://digitalcollections.nypl.org/items/5e66b3e8-6ffd-d471-e040-e00a180654d7
<ref name=NYPL>{{cite web | url=https://digitalcollections.nypl.org/items/5e66b3e8-6ffd-d471-e040-e00a180654d7 | title=
(still image)
Group portrait of party taken by Spencer Trask to show Lord Kelvin the General Electric Works, Schenectady, N.Y., (1870 - 1909)|author=Digital Collections, The New York Public Library |accessdate=March 19, 2024 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>