MLA
Cartes-De-Visite of Union General Ulysses S. Grant, "Siege of Vicksburg". Stuart A. Rose Manuscript, Archives, and Rare Book Library, OP9, Folder 12. https://digital.library.emory.edu/purl/53976hdshc-cor.
APA, 6th edition
Cartes-de-visite of Union General Ulysses S. Grant, "Siege of Vicksburg" (OP9, Folder 12). [Cartes-de-visite (card photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/53976hdshc-cor.
Chicago
“Cartes-De-Visite of Union General Ulysses S. Grant, ‘Siege of Vicksburg.’” Cartes-de-visite (card photographs). Civil War Collection, n.d. OP9, Folder 12. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/53976hdshc-cor.