MLA
Wolf, Heinz. Sonny Boy Williamson and Two Other African American Men. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 3. https://digital.library.emory.edu/purl/6386hdr7zs-cor.
APA, 6th edition
Wolf, H. Sonny Boy Williamson and two other African American men (Box 3) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6386hdr7zs-cor.
Chicago
Wolf, Heinz. “Sonny Boy Williamson and Two Other African American Men.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 3. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6386hdr7zs-cor.