MLA
Hauling Cotton : an African American Man Riding on Top of a Wagon, Loaded with Baskets of Cotton, Pulled by Two Mules [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/156zw3r259-cor.
APA, 6th edition
Hauling cotton : an African American man riding on top of a wagon, loaded with baskets of cotton, pulled by two mules [hand colored] (Box 68). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/156zw3r259-cor.
Chicago
“Hauling Cotton : an African American Man Riding on Top of a Wagon, Loaded with Baskets of Cotton, Pulled by Two Mules [Hand Colored].” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/156zw3r259-cor.