MLA
Frank Henry Holding a Firearm, Standing next to His Commander, Both of Them Wearing Uniforms. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/255z612jqk-cor.
APA, 6th edition
Frank Henry holding a firearm, standing next to his commander, both of them wearing uniforms (Box 70). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/255z612jqk-cor.
Chicago
“Frank Henry Holding a Firearm, Standing next to His Commander, Both of Them Wearing Uniforms.” 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/255z612jqk-cor.