MLA
Uncle Tom : an Older African American Man with a Beard, Sitting on Steps and Holding a Stick. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/10966t1g2w-cor.
APA, 6th edition
Uncle Tom : an older African American man with a beard, sitting on steps and holding a stick (Box 72). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/10966t1g2w-cor.
Chicago
“Uncle Tom : an Older African American Man with a Beard, Sitting on Steps and Holding a Stick.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/10966t1g2w-cor.