MLA
Union Patriotic Envelopes - Union General Winfield Scott as a Bald Eagle, "I Think Your SAUCE Enough, Sly Bird, and e'Er You Further Go, You'Ll Get Some Red-Hot PEPPER, That Will Make You 'Jump JIM CROW.'". 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 21, Folder 9. https://digital.library.emory.edu/purl/252j6q588f-cor.
APA, 6th edition
Union patriotic envelopes - Union general Winfield Scott as a bald eagle, "I think your SAUCE enough, sly bird, and e'er you further go, You'll get some red-hot PEPPER, that will make you 'jump JIM CROW.'" (Box 21, Folder 9). (1861). [Envelopes]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/252j6q588f-cor.
Chicago
“Union Patriotic Envelopes - Union General Winfield Scott as a Bald Eagle, ‘I Think Your SAUCE Enough, Sly Bird, and e'Er You Further Go, You'Ll Get Some Red-Hot PEPPER, That Will Make You 'Jump JIM CROW.'".” Envelopes. Civil War Collection, 1861. Box 21, Folder 9. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/252j6q588f-cor.