MLA
Ball, and Thomas. Portrait of Mary J. Pattison. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 43. https://digital.library.emory.edu/purl/890rr4xh36-cor.
APA, 6th edition
B., & T. Portrait of Mary J. Pattison (Box 43) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/890rr4xh36-cor.
Chicago
Ball, and Thomas. “Portrait of Mary J. Pattison.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 43. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/890rr4xh36-cor.