MLA
Bros., Russell. A Seated African American Man Wearing Suspenders with Cloth Wrapped Feet. 1899. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 17. https://digital.library.emory.edu/purl/549g4f4qzn-cor.
APA, 6th edition
Bros., R. (1899). A seated African American man wearing suspenders with cloth wrapped feet (Box 17) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/549g4f4qzn-cor.
Chicago
Bros., Russell. “A Seated African American Man Wearing Suspenders with Cloth Wrapped Feet.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, 1899. Box 17. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/549g4f4qzn-cor.