MLA
Atkins, James. Letter from James Atkins (Macon, Georgia) to " Mal Reel [?] and Patsy Griffin" (Morgan, Georgia). James Atkins Served in Company D of the 12th Georgia Infantry Regiment - June 15, 1861 (Photocopy). 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 1, Folder 10. https://digital.library.emory.edu/purl/28380gb6ks-cor.
APA, 6th edition
Atkins, J. (1861). Letter from James Atkins (Macon, Georgia) to " Mal Reel [?] and Patsy Griffin" (Morgan, Georgia). James Atkins served in Company D of the 12th Georgia Infantry Regiment - June 15, 1861 (photocopy) (Box 1, Folder 10) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/28380gb6ks-cor.
Chicago
Atkins, James. “Letter from James Atkins (Macon, Georgia) to " Mal Reel [?] and Patsy Griffin’ (Morgan, Georgia). James Atkins Served in Company D of the 12th Georgia Infantry Regiment - June 15, 1861 (Photocopy).” Letters (correspondence). Civil War Collection, 1861. Box 1, Folder 10. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/28380gb6ks-cor.