MLA
Dorsey, Binion. Letter from Dorsey Binion (near Guinea Station, Virginia) to His "Dear Sister." Dorsey Served in the 48th Georgia Infantry Regiment, Company K - May 11, 1863 (Photocopy). 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 1, Folder 29. https://digital.library.emory.edu/purl/1848pk0q32-cor.
APA, 6th edition
Dorsey, B. (1863). Letter from Dorsey Binion (near Guinea Station, Virginia) to his "Dear Sister." Dorsey served in the 48th Georgia Infantry Regiment, Company K - May 11, 1863 (photocopy) (Box 1, Folder 29) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1848pk0q32-cor.
Chicago
Dorsey, Binion. “Letter from Dorsey Binion (near Guinea Station, Virginia) to His ‘Dear Sister." Dorsey Served in the 48th Georgia Infantry Regiment, Company K - May 11, 1863 (Photocopy).” Letters (correspondence). Civil War Collection, 1863. Box 1, Folder 29. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1848pk0q32-cor.