MLA
Robinson, Charles D. Dr. Booker T. Washington's Grave, November 17, 1915. 1915. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/003cz8w9m7-cor.
APA, 6th edition
Robinson, C. D. (1915). Dr. Booker T. Washington's grave, November 17, 1915 (Box 71) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/003cz8w9m7-cor.
Chicago
Robinson, Charles D. “Dr. Booker T. Washington's Grave, November 17, 1915.” Postcards. Robert Langmuir African American Photograph Collection, 1915. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/003cz8w9m7-cor.