MLA
Old Virginia Darkey, 107 Years Old : an African American Man Standing in Front of a Oxen-Drawn Cart, in Chase City, Virginia. 1907. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/887brv15h2-cor.
APA, 6th edition
Old Virginia Darkey, 107 years old : an African American man standing in front of a oxen-drawn cart, in Chase City, Virginia (Box 72). (1907). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/887brv15h2-cor.
Chicago
“Old Virginia Darkey, 107 Years Old : an African American Man Standing in Front of a Oxen-Drawn Cart, in Chase City, Virginia.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1907. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/887brv15h2-cor.