MLA
Union General Nathaniel Lyon. 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 22, Folder 64. https://digital.library.emory.edu/purl/52259zw4tf-cor.
APA, 6th edition
Union general Nathaniel Lyon (Box 22, Folder 64). (1861). [Engravings (prints)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/52259zw4tf-cor.
Chicago
“Union General Nathaniel Lyon.” Engravings (prints). Civil War Collection, 1861. Box 22, Folder 64. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/52259zw4tf-cor.