MLA
Lawrence Newly Sledge, Jas T. Copper, Genoa Washington and Seven Other Men in Suits behind a Desk, in an Office, One of Them Writing on a Paper with a Pen. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 40. https://digital.library.emory.edu/purl/8773tx962r-cor.
APA, 6th edition
Lawrence Newly Sledge, Jas T. Copper, Genoa Washington and seven other men in suits behind a desk, in an office, one of them writing on a paper with a pen (Box 40). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8773tx962r-cor.
Chicago
“Lawrence Newly Sledge, Jas T. Copper, Genoa Washington and Seven Other Men in Suits behind a Desk, in an Office, One of Them Writing on a Paper with a Pen.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 40. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/8773tx962r-cor.