MLA
Rufus D. Thomas, African American Soldier. 1918. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 20. https://digital.library.emory.edu/purl/750tqjq2r8-cor.
APA, 6th edition
Rufus D. Thomas, African American soldier (Box 20). (1918). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/750tqjq2r8-cor.
Chicago
“Rufus D. Thomas, African American Soldier.” Photographic postcards. Langmuir Deposit - Sept 2020, 1918. Box 20. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/750tqjq2r8-cor.