MLA
A Clipping of a Portrait of Union Major-General Jacob D. Cox. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 2, Folder 16. https://digital.library.emory.edu/purl/3009w0vv42-cor.
APA, 6th edition
A clipping of a portrait of Union Major-General Jacob D. Cox (Box 2, Folder 16). [Clippings (information artifacts)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3009w0vv42-cor.
Chicago
“A Clipping of a Portrait of Union Major-General Jacob D. Cox.” Clippings (information artifacts). Civil War Collection, n.d. Box 2, Folder 16. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3009w0vv42-cor.