MLA
Jordan, George W. Letter from George W. Jordan (Camp near Bristol, Tennessee), to His Sister. Jordan Was a Surgeon in the 59th Tennessee Infantry Regiment - May 29, 1864. 1864. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 4, Folder 22. https://digital.library.emory.edu/purl/679573n6x1-cor.
APA, 6th edition
Jordan, G. W. (1864). Letter from George W. Jordan (Camp near Bristol, Tennessee), to his sister. Jordan was a surgeon in the 59th Tennessee Infantry Regiment - May 29, 1864 (Box 4, Folder 22) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/679573n6x1-cor.
Chicago
Jordan, George W. “Letter from George W. Jordan (Camp near Bristol, Tennessee), to His Sister. Jordan Was a Surgeon in the 59th Tennessee Infantry Regiment - May 29, 1864.” Letters (correspondence). Civil War Collection, 1864. Box 4, Folder 22. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/679573n6x1-cor.