MLA
Hampton, Ephraim. Letter from Ephraim Hampton to His Wife and Children. Ephraim Served in the Company C of the 45th Virginia Infantry Regiment until He Was Transferred to Company G of the 65th Virginia Infantry Regiment - September 16, 1861. 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 3, Folder 48. https://digital.library.emory.edu/purl/0106wwq0g3-cor.
APA, 6th edition
Hampton, E. (1861). Letter from Ephraim Hampton to his wife and children. Ephraim served in the Company C of the 45th Virginia Infantry Regiment until he was transferred to Company G of the 65th Virginia Infantry Regiment - September 16, 1861 (Box 3, Folder 48) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0106wwq0g3-cor.
Chicago
Hampton, Ephraim. “Letter from Ephraim Hampton to His Wife and Children. Ephraim Served in the Company C of the 45th Virginia Infantry Regiment until He Was Transferred to Company G of the 65th Virginia Infantry Regiment - September 16, 1861.” Letters (correspondence). Civil War Collection, 1861. Box 3, Folder 48. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0106wwq0g3-cor.