MLA
Spencer, Thomas. Tombstones of the Six Ringleaders of the Andersonville Raiders, a Prisoner Group in Andersonville Prison That Attacked Fellow Union Prisoners for Food and Valuables. They Were Tried and Executed by Their Fellow Prisoners on July 11, 1864. 1953. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 4. https://digital.library.emory.edu/purl/3483j9kf86-cor.
APA, 6th edition
Spencer, T. (1953). Tombstones of the six ringleaders of the Andersonville Raiders, a prisoner group in Andersonville Prison that attacked fellow union prisoners for food and valuables. They were tried and executed by their fellow prisoners on July 11, 1864 (Box 14, Folder 4) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3483j9kf86-cor.
Chicago
Spencer, Thomas. “Tombstones of the Six Ringleaders of the Andersonville Raiders, a Prisoner Group in Andersonville Prison That Attacked Fellow Union Prisoners for Food and Valuables. They Were Tried and Executed by Their Fellow Prisoners on July 11, 1864.” Black-and-white photographs. Civil War Collection, 1953. Box 14, Folder 4. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3483j9kf86-cor.