MLA
Routzahn, Nathaniel. Confederate General Thomas "Stonewall" Jackson. Copy of Photograph Taken by Copy of Photograph Taken by Nathaniel Routzahn in Winchester, Virginia. 1862. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 16, Folder 35. https://digital.library.emory.edu/purl/658pc867js-cor.
APA, 6th edition
Routzahn, N. (1862). Confederate general Thomas "Stonewall" Jackson. Copy of photograph taken by copy of photograph taken by Nathaniel Routzahn in Winchester, Virginia (Box 16, Folder 35) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/658pc867js-cor.
Chicago
Routzahn, Nathaniel. “Confederate General Thomas ‘Stonewall’ Jackson. Copy of Photograph Taken by Copy of Photograph Taken by Nathaniel Routzahn in Winchester, Virginia.” Black-and-white photographs. Civil War Collection, 1862. Box 16, Folder 35. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/658pc867js-cor.