MLA
Moffitt, A. J. Letter from A. J. Moffitt to Aaron Moffitt. Aaron Served in Company G of the 62nd North Carolina Infantry Regiment - July 1, 1863. 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 5, Folder 24. https://digital.library.emory.edu/purl/733rv15fwk-cor.
APA, 6th edition
Moffitt, A. J. (1863). Letter from A. J. Moffitt to Aaron Moffitt. Aaron served in Company G of the 62nd North Carolina Infantry Regiment - July 1, 1863 (Box 5, Folder 24) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/733rv15fwk-cor.
Chicago
Moffitt, A. J. “Letter from A. J. Moffitt to Aaron Moffitt. Aaron Served in Company G of the 62nd North Carolina Infantry Regiment - July 1, 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/733rv15fwk-cor.