MLA
Union General William Tecumseh Sherman. 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 22, Folder 41. https://digital.library.emory.edu/purl/047rn8pm58-cor.
APA, 6th edition
Union general William Tecumseh Sherman (Box 22, Folder 41). (1861). [Cartes-de-visite (card photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/047rn8pm58-cor.
Chicago
“Union General William Tecumseh Sherman.” Cartes-de-visite (card photographs). Civil War Collection, 1861. Box 22, Folder 41. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/047rn8pm58-cor.