MLA
Cottrell. Dusty Fletcher in Top Hat and Suit Shaking Hands with Another Man Dressed like Him. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 7. https://digital.library.emory.edu/purl/38279cnpc5-cor.
APA, 6th edition
C. Dusty Fletcher in top hat and suit shaking hands with another man dressed like him (Box 7) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/38279cnpc5-cor.
Chicago
Cottrell. “Dusty Fletcher in Top Hat and Suit Shaking Hands with Another Man Dressed like Him.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 7. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/38279cnpc5-cor.