MLA
African American Mailman Holding Some Letters. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/7784j0zphc-cor.
APA, 6th edition
African American mailman holding some letters (Box 71). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7784j0zphc-cor.
Chicago
“African American Mailman Holding Some Letters.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7784j0zphc-cor.