MLA
Rowe, F. L. The Mule Race at Coonville Here Comes De Winner. 1896. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 45. https://digital.library.emory.edu/purl/52908kprwh-cor.
APA, 6th edition
Rowe, F. L. (1896). The mule race at Coonville Here comes de winner (Box 45) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/52908kprwh-cor.
Chicago
Rowe, F. L. “The Mule Race at Coonville Here Comes De Winner.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, 1896. Box 45. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/52908kprwh-cor.