MLA
Co., Albertype. An Old African American Man in a Cart Hooked up to an Ox. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/6623bk3jd7-cor.
APA, 6th edition
Co., A. An old African American man in a cart hooked up to an ox (Box 74) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6623bk3jd7-cor.
Chicago
Co., Albertype. “An Old African American Man in a Cart Hooked up to an Ox.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6623bk3jd7-cor.