MLA
Spencer, Thomas. Cannon near the Cravens House at Lookout Mountain, Tennessee. 1954. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 15, Folder 7. https://digital.library.emory.edu/purl/2150gb5nq3-cor.
APA, 6th edition
Spencer, T. (1954). Cannon near the Cravens House at Lookout Mountain, Tennessee (Box 15, Folder 7) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/2150gb5nq3-cor.
Chicago
Spencer, Thomas. “Cannon near the Cravens House at Lookout Mountain, Tennessee.” Black-and-white photographs. Civil War Collection, 1954. Box 15, Folder 7. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/2150gb5nq3-cor.