MLA
Hudgins, F. L. Group Portrait of the 38th Georgia Regiment during Reunion Event in Decatur, Georgia. 1890. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 8, Folder 38. https://digital.library.emory.edu/purl/982x3ffc63-cor.
APA, 6th edition
Hudgins, F. L. (1890). Group portrait of the 38th Georgia Regiment during reunion event in Decatur, Georgia (Box 8, Folder 38) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/982x3ffc63-cor.
Chicago
Hudgins, F. L. “Group Portrait of the 38th Georgia Regiment during Reunion Event in Decatur, Georgia.” Black-and-white photographs. Civil War Collection, 1890. Box 8, Folder 38. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/982x3ffc63-cor.