MLA
Services, Emory University Photographic. Identified Speakers and Entertainers - Mark Hatfield, Senator from Oregon. 1974. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 6, Folder 11. https://digital.library.emory.edu/purl/4579s4mwss-cor.
APA, 6th edition
Services, E. U. P. (1974). Identified Speakers and Entertainers - Mark Hatfield, Senator from Oregon (Box 6, Folder 11) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4579s4mwss-cor.
Chicago
Services, Emory University Photographic. “Identified Speakers and Entertainers - Mark Hatfield, Senator from Oregon.” Black-and-white photographs. Emory University Office of Alumni Publications Photographs, 1974. Box 6, Folder 11. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4579s4mwss-cor.