MLA
Spencer, Thomas. Fort Morgan at the Mouth of Mobile Bay, Alabama. 1952. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 1. https://digital.library.emory.edu/purl/508hdr7ts1-cor.
APA, 6th edition
Spencer, T. (1952). Fort Morgan at the mouth of Mobile Bay, Alabama (Box 14, Folder 1) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/508hdr7ts1-cor.
Chicago
Spencer, Thomas. “Fort Morgan at the Mouth of Mobile Bay, Alabama.” Black-and-white photographs. Civil War Collection, 1952. Box 14, Folder 1. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/508hdr7ts1-cor.