MLA
Spencer, Thomas. Battlefield at Kennesaw Mountain in Cobb County, Georgia. 1930. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 10. https://digital.library.emory.edu/purl/433dz08mtj-cor.
APA, 6th edition
Spencer, T. (1930). Battlefield at Kennesaw Mountain in Cobb County, Georgia (Box 14, Folder 10) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08mtj-cor.
Chicago
Spencer, Thomas. “Battlefield at Kennesaw Mountain in Cobb County, Georgia.” Black-and-white photographs. Civil War Collection, 1930. Box 14, Folder 10. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/433dz08mtj-cor.