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The New York Public Library is a 501(c)(3) | EIN 13-1887440
Grand Canyon and the Colorado. Denver, Colorado Canyon and Pacific Railroad Survey
Manuscripts and Archives Division, The New York Public Library. "Lunch hour in Grand Canyon." The New York Public Library Digital Collections. 1889 - 1890. https://qa-digitalcollections.nypl.org/items/510d47e2-62f7-a3d9-e040-e00a18064a99
Manuscripts and Archives Division, The New York Public Library. "Lunch hour in Grand Canyon." New York Public Library Digital Collections. Accessed November 22, 2024. https://qa-digitalcollections.nypl.org/items/510d47e2-62f7-a3d9-e040-e00a18064a99
Manuscripts and Archives Division, The New York Public Library. (1889 - 1890). Lunch hour in Grand Canyon. Retrieved from https://qa-digitalcollections.nypl.org/items/510d47e2-62f7-a3d9-e040-e00a18064a99
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(still image)
Lunch hour in Grand Canyon., (1889 - 1890)|author=Digital Collections, The New York Public Library |accessdate=November 22, 2024 |publisher=The New York Public Library, Astor, Lenox, and Tilden Foundations}}</ref>