MLA
Unequally Yoked Together : African American Men with an Ox and Mule Cart and Slabs of Wood. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 2. https://digital.library.emory.edu/purl/6451g1jx14-cor.
APA, 6th edition
Unequally Yoked Together : African American men with an ox and mule cart and slabs of wood (Box 2). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6451g1jx14-cor.
Chicago
“Unequally Yoked Together : African American Men with an Ox and Mule Cart and Slabs of Wood.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 2. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6451g1jx14-cor.