MLA
Spencer, Thomas. House in Iuka, Mississippi. The House Was Used by Both Confederate and Union Troops during the Civil War. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 15, Folder 4. https://digital.library.emory.edu/purl/85370rxxkt-cor.
APA, 6th edition
Spencer, T. (1940). House in Iuka, Mississippi. The house was used by both Confederate and Union troops during the Civil War (Box 15, Folder 4) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxxkt-cor.
Chicago
Spencer, Thomas. “House in Iuka, Mississippi. The House Was Used by Both Confederate and Union Troops during the Civil War.” Black-and-white photographs. Civil War Collection, 1940. Box 15, Folder 4. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxxkt-cor.