MLA
Couch, Arminda. Letter from Arminda Couch (Dalton, Georgia) to Her Husband, Jackson Couch - September 29, 1862. 1862. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 2, Folder 29. https://digital.library.emory.edu/purl/1676t1g2jb-cor.
APA, 6th edition
Couch, A. (1862). Letter from Arminda Couch (Dalton, Georgia) to her husband, Jackson Couch - September 29, 1862 (Box 2, Folder 29) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1676t1g2jb-cor.
Chicago
Couch, Arminda. “Letter from Arminda Couch (Dalton, Georgia) to Her Husband, Jackson Couch - September 29, 1862.” Letters (correspondence). Civil War Collection, 1862. Box 2, Folder 29. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1676t1g2jb-cor.