MLA
Spencer, Thomas. Gate at the Entrance to Valley View House near Cartersville, Georgia. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 7. https://digital.library.emory.edu/purl/6451g1jxzb-cor.
APA, 6th edition
Spencer, T. (1940). Gate at the entrance to Valley View House near Cartersville, Georgia (Box 14, Folder 7) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6451g1jxzb-cor.
Chicago
Spencer, Thomas. “Gate at the Entrance to Valley View House near Cartersville, Georgia.” Black-and-white photographs. Civil War Collection, 1940. Box 14, Folder 7. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6451g1jxzb-cor.