MLA
Spencer, Thomas. Train at Bradenton, Florida. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 2. https://digital.library.emory.edu/purl/97634tmqgw-cor.
APA, 6th edition
Spencer, T. (1940). Train at Bradenton, Florida (Box 14, Folder 2) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/97634tmqgw-cor.
Chicago
Spencer, Thomas. “Train at Bradenton, Florida.” Black-and-white photographs. Civil War Collection, 1940. Box 14, Folder 2. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/97634tmqgw-cor.