MLA
Spencer, Thomas. Fort Sumter in Charleston, South Carolina. The Battle of Fort Sumter Fought on April 12-13, 1861 Was the First Battle of the Civil War. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 15, Folder 6. https://digital.library.emory.edu/purl/996k0p2pn1-cor.
APA, 6th edition
Spencer, T. (1940). Fort Sumter in Charleston, South Carolina. The Battle of Fort Sumter fought on April 12-13, 1861 was the first battle of the Civil War (Box 15, Folder 6) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/996k0p2pn1-cor.
Chicago
Spencer, Thomas. “Fort Sumter in Charleston, South Carolina. The Battle of Fort Sumter Fought on April 12-13, 1861 Was the First Battle of the Civil War.” Black-and-white photographs. Civil War Collection, 1940. Box 15, Folder 6. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/996k0p2pn1-cor.