MLA
Envelope Addressed to Mrs. Thomas J. Wiley in Newton, Georgia. 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 7, Folder 24. https://digital.library.emory.edu/purl/0343r22936-cor.
APA, 6th edition
Envelope addressed to Mrs. Thomas J. Wiley in Newton, Georgia (Box 7, Folder 24). (1863). [Envelopes]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0343r22936-cor.
Chicago
“Envelope Addressed to Mrs. Thomas J. Wiley in Newton, Georgia.” Envelopes. Civil War Collection, 1863. Box 7, Folder 24. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0343r22936-cor.