MLA
A Load of Compressed Cotton : Two African American Men Riding on Top of a Loaded Wagon Pulled by Two Mules along a Dirt Road Lined by a Wooden Fence [Hand Colored]. 1912. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/1439zw3r4m-cor.
APA, 6th edition
A load of compressed cotton : two African American men riding on top of a loaded wagon pulled by two mules along a dirt road lined by a wooden fence [hand colored] (Box 68). (1912). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3r4m-cor.
Chicago
“A Load of Compressed Cotton : Two African American Men Riding on Top of a Loaded Wagon Pulled by Two Mules along a Dirt Road Lined by a Wooden Fence [Hand Colored].” Postcards. Robert Langmuir African American Photograph Collection, 1912. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3r4m-cor.