MLA
Wilson, M. B. An Old Auntie Selling Groun-Nut Cakes. 1953. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/0515mkkwmk-cor.
APA, 6th edition
Wilson, M. B. (1953). An old auntie selling groun-nut cakes (Box 70) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0515mkkwmk-cor.
Chicago
Wilson, M. B. “An Old Auntie Selling Groun-Nut Cakes.” Photographic postcards. Robert Langmuir African American Photograph Collection, 1953. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0515mkkwmk-cor.