MLA
Jewell, James. Letter from James Jewell to "Dear Sister" from Camp Tiller, Griffin Georgia. Jewel Served in Echols Battery, Georgia Light Artillery - June 14, 1862 (Photocopy). 1862. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 4, Folder 10. https://digital.library.emory.edu/purl/054kkwh814-cor.
APA, 6th edition
Jewell, J. (1862). Letter from James Jewell to "Dear Sister" from Camp Tiller, Griffin Georgia. Jewel served in Echols Battery, Georgia Light Artillery - June 14, 1862 (photocopy) (Box 4, Folder 10) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/054kkwh814-cor.
Chicago
Jewell, James. “Letter from James Jewell to ‘Dear Sister’ from Camp Tiller, Griffin Georgia. Jewel Served in Echols Battery, Georgia Light Artillery - June 14, 1862 (Photocopy).” Letters (correspondence). Civil War Collection, 1862. Box 4, Folder 10. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/054kkwh814-cor.