MLA
Underwood, and Underwood. Identified Speakers and Entertainers - Edwin Embree, Writer and Vice-President of the Rockefeller Foundation. 1930. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 6, Folder 12. https://digital.library.emory.edu/purl/1848pk0pn9-cor.
APA, 6th edition
U., & U. (1930). Identified Speakers and Entertainers - Edwin Embree, writer and vice-president of the Rockefeller Foundation (Box 6, Folder 12) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1848pk0pn9-cor.
Chicago
Underwood, and Underwood. “Identified Speakers and Entertainers - Edwin Embree, Writer and Vice-President of the Rockefeller Foundation.” Black-and-white photographs. Emory University Office of Alumni Publications Photographs, 1930. Box 6, Folder 12. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1848pk0pn9-cor.