MLA
Nichols, W. L. An Older African American Soldier in Uniform, Holding a Saber. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/10966t1g4n-cor.
APA, 6th edition
Nichols, W. L. An older African American soldier in uniform, holding a saber (Box 70) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/10966t1g4n-cor.
Chicago
Nichols, W. L. “An Older African American Soldier in Uniform, Holding a Saber.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/10966t1g4n-cor.