MLA
Spencer, Thomas. Historical Marker at the Site of the Battle of Cowpens in Cowpens, South Carolina. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 15, Folder 6. https://digital.library.emory.edu/purl/4407wm38rj-cor.
APA, 6th edition
Spencer, T. (1940). Historical marker at the site of the Battle of Cowpens in Cowpens, South Carolina (Box 15, Folder 6) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4407wm38rj-cor.
Chicago
Spencer, Thomas. “Historical Marker at the Site of the Battle of Cowpens in Cowpens, South Carolina.” Black-and-white photographs. Civil War Collection, 1940. Box 15, Folder 6. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4407wm38rj-cor.