MLA
Spencer, Thomas. Cass Station near Cassville, Georgia. 1953. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 6. https://digital.library.emory.edu/purl/535t76hfvw-cor.
APA, 6th edition
Spencer, T. (1953). Cass Station near Cassville, Georgia (Box 14, Folder 6) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/535t76hfvw-cor.
Chicago
Spencer, Thomas. “Cass Station near Cassville, Georgia.” Black-and-white photographs. Civil War Collection, 1953. Box 14, Folder 6. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/535t76hfvw-cor.