MLA
Spencer, Thomas. Confederate Flag That Flew over the Confederate Prison at Salisbury, North Carolina. It Was Captured on April 12, 1865 and Returned to Salisbury on September 26, 1962. 1962. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 15, Folder 5. https://digital.library.emory.edu/purl/5462547fdp-cor.
APA, 6th edition
Spencer, T. (1962). Confederate flag that flew over the Confederate prison at Salisbury, North Carolina. It was captured on April 12, 1865 and returned to Salisbury on September 26, 1962 (Box 15, Folder 5) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/5462547fdp-cor.
Chicago
Spencer, Thomas. “Confederate Flag That Flew over the Confederate Prison at Salisbury, North Carolina. It Was Captured on April 12, 1865 and Returned to Salisbury on September 26, 1962.” Black-and-white photographs. Civil War Collection, 1962. Box 15, Folder 5. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/5462547fdp-cor.