MLA
News, and Publications Bureau. Unidentified Speakers and Entertainers - Group of People Sitting on Couch. 1930. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 7, Folder 1. https://digital.library.emory.edu/purl/767wm37qh7-cor.
APA, 6th edition
N., & Bureau, P. (1930). Unidentified Speakers and Entertainers - Group of people sitting on couch (Box 7, Folder 1) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/767wm37qh7-cor.
Chicago
News, and Publications Bureau. “Unidentified Speakers and Entertainers - Group of People Sitting on Couch.” Black-and-white photographs. Emory University Office of Alumni Publications Photographs, 1930. Box 7, Folder 1. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/767wm37qh7-cor.