MLA
Spencer, Thomas. Mars Hill Church South of Acworth, Georgia. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 10. https://digital.library.emory.edu/purl/180vq83ckv-cor.
APA, 6th edition
Spencer, T. (1940). Mars Hill Church south of Acworth, Georgia (Box 14, Folder 10) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/180vq83ckv-cor.
Chicago
Spencer, Thomas. “Mars Hill Church South of Acworth, Georgia.” Black-and-white photographs. Civil War Collection, 1940. Box 14, Folder 10. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/180vq83ckv-cor.