MLA
Spencer, Thomas. Open Ground near Highway 41 in Resaca, Georgia. Site of a Confederate Artillery Battery during the Battle of Resaca in May 13-15, 1864. 1950. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 20. https://digital.library.emory.edu/purl/105s7h45n6-cor.
APA, 6th edition
Spencer, T. (1950). Open ground near Highway 41 in Resaca, Georgia. Site of a Confederate artillery battery during the Battle of Resaca in May 13-15, 1864 (Box 14, Folder 20) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/105s7h45n6-cor.
Chicago
Spencer, Thomas. “Open Ground near Highway 41 in Resaca, Georgia. Site of a Confederate Artillery Battery during the Battle of Resaca in May 13-15, 1864.” Black-and-white photographs. Civil War Collection, 1950. Box 14, Folder 20. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/105s7h45n6-cor.