MLA
Blatherwick, E. J. Portrait of Old Black Joe. 1906. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/699n2z34wg-cor.
APA, 6th edition
Blatherwick, E. J. (1906). Portrait of Old Black Joe (Box 72) [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z34wg-cor.
Chicago
Blatherwick, E. J. “Portrait of Old Black Joe.” Postcards. Robert Langmuir African American Photograph Collection, 1906. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z34wg-cor.