MLA
Spencer, Thomas. Bloody Pond at the Chickamauga Battlefield in Chickamauga, Georgia. 1920. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 9. https://digital.library.emory.edu/purl/293gxd2667-cor.
APA, 6th edition
Spencer, T. (1920). Bloody Pond at the Chickamauga Battlefield in Chickamauga, Georgia (Box 14, Folder 9) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/293gxd2667-cor.
Chicago
Spencer, Thomas. “Bloody Pond at the Chickamauga Battlefield in Chickamauga, Georgia.” Black-and-white photographs. Civil War Collection, 1920. Box 14, Folder 9. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/293gxd2667-cor.