MLA
Portrait of John Brown, American Abolitionist. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/542n5tb2v4-cor.
APA, 6th edition
Portrait of John Brown, American abolitionist (Box 69). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/542n5tb2v4-cor.
Chicago
“Portrait of John Brown, American Abolitionist.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/542n5tb2v4-cor.