MLA
African American Man Speaking in Front of a Group of Men in Suits on a Boat, with an American Flag in the Background. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/682k6djhd5-cor.
APA, 6th edition
African American man speaking in front of a group of men in suits on a boat, with an American flag in the background (Box 74). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/682k6djhd5-cor.
Chicago
“African American Man Speaking in Front of a Group of Men in Suits on a Boat, with an American Flag in the Background.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/682k6djhd5-cor.