MLA
Moffitt, Aaron, Jr. Letter from Aaron Moffitt Jr. to His Father and Mother. Aaron Served in Company G of the 62nd North Carolina Infantry Regiment - May 30, 1863. 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 5, Folder 24. https://digital.library.emory.edu/purl/1504xgxf2n-cor.
APA, 6th edition
Moffitt, A., Jr. (1863). Letter from Aaron Moffitt Jr. to his father and mother. Aaron served in Company G of the 62nd North Carolina Infantry Regiment - May 30, 1863 (Box 5, Folder 24) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1504xgxf2n-cor.
Chicago
Moffitt, Aaron, Jr. “Letter from Aaron Moffitt Jr. to His Father and Mother. Aaron Served in Company G of the 62nd North Carolina Infantry Regiment - May 30, 1863.” Letters (correspondence). Civil War Collection, 1863. Box 5, Folder 24. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1504xgxf2n-cor.