MLA
Duncan, Bob. Administrators - Three Men Speaking with Each Other. 1964. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 7, Folder 3. https://digital.library.emory.edu/purl/8773tx96j6-cor.
APA, 6th edition
Duncan, B. (1964). Administrators - Three men speaking with each other (Box 7, Folder 3) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8773tx96j6-cor.
Chicago
Duncan, Bob. “Administrators - Three Men Speaking with Each Other.” Black-and-white photographs. Emory University Office of Alumni Publications Photographs, 1964. Box 7, Folder 3. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8773tx96j6-cor.