MLA
Higinbothom, G. D. Portrait of an African American Man in a Suit and Hat. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/1913n5tb4z-cor.
APA, 6th edition
Higinbothom, G. D. Portrait of an African American man in a suit and hat (Box 73) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1913n5tb4z-cor.
Chicago
Higinbothom, G. D. “Portrait of an African American Man in a Suit and Hat.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1913n5tb4z-cor.