MLA
Spencer, Thomas. Exterior of Clayton House in Allatoona, Georgia. The Battle of Allatoona Was Fought Here in October 5, 1864. 1949. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 3. https://digital.library.emory.edu/purl/610wpzgnxq-cor.
APA, 6th edition
Spencer, T. (1949). Exterior of Clayton House in Allatoona, Georgia. The Battle of Allatoona was fought here in October 5, 1864 (Box 14, Folder 3) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgnxq-cor.
Chicago
Spencer, Thomas. “Exterior of Clayton House in Allatoona, Georgia. The Battle of Allatoona Was Fought Here in October 5, 1864.” Black-and-white photographs. Civil War Collection, 1949. Box 14, Folder 3. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgnxq-cor.