MLA
Lin, M. M. Letter from M. M. Lin (Lawrence County, Tennessee), to "Dear Sisters" - September 12, 1861. 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 4, Folder 47. https://digital.library.emory.edu/purl/129p2ngg2c-cor.
APA, 6th edition
Lin, M. M. (1861). Letter from M. M. Lin (Lawrence County, Tennessee), to "Dear Sisters" - September 12, 1861 (Box 4, Folder 47) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/129p2ngg2c-cor.
Chicago
Lin, M. M. “Letter from M. M. Lin (Lawrence County, Tennessee), to ‘Dear Sisters’ - September 12, 1861.” Letters (correspondence). Civil War Collection, 1861. Box 4, Folder 47. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/129p2ngg2c-cor.