MLA
Binion, Dorsey. Letter from Dorsey Binion (near Fredericksburg, Virginia) to His "Dear Sister." Dorsey Served in the 48th Georgia Infantry Regiment, Company K - November 29, 1862 (Photocopy). 1862. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 1, Folder 29. https://digital.library.emory.edu/purl/112m63xtkc-cor.
APA, 6th edition
Binion, D. (1862). Letter from Dorsey Binion (near Fredericksburg, Virginia) to his "Dear Sister." Dorsey served in the 48th Georgia Infantry Regiment, Company K - November 29, 1862 (photocopy) (Box 1, Folder 29) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/112m63xtkc-cor.
Chicago
Binion, Dorsey. “Letter from Dorsey Binion (near Fredericksburg, Virginia) to His ‘Dear Sister." Dorsey Served in the 48th Georgia Infantry Regiment, Company K - November 29, 1862 (Photocopy).” Letters (correspondence). Civil War Collection, 1862. Box 1, Folder 29. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/112m63xtkc-cor.