MLA
Anderson, Eliza C. Letter from Eliza C. Anderson (Savannah) to "My Dear Mary." Writes of Colonel Don Pearson Buell's Possession of Her House and the Loss of Most House Slaves in Savannah to "Freedom" - January 1, 1864. 1864. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 1, Folder 5. https://digital.library.emory.edu/purl/419s1rn9pg-cor.
APA, 6th edition
Anderson, E. C. (1864). Letter from Eliza C. Anderson (Savannah) to "My dear Mary." Writes of Colonel Don Pearson Buell's possession of her house and the loss of most house slaves in Savannah to "freedom" - January 1, 1864 (Box 1, Folder 5) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/419s1rn9pg-cor.
Chicago
Anderson, Eliza C. “Letter from Eliza C. Anderson (Savannah) to ‘My Dear Mary." Writes of Colonel Don Pearson Buell's Possession of Her House and the Loss of Most House Slaves in Savannah to ‘Freedom’ - January 1, 1864.” Letters (correspondence). Civil War Collection, 1864. Box 1, Folder 5. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/419s1rn9pg-cor.