MLA
Caldwell, Mary W. Letter from Mary W. Caldwell (Forkland Grove, Georgia to "My Dear Sister Julia" - January 23, 1854 (Typescript). 1854. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 2, Folder 2. https://digital.library.emory.edu/purl/003cz8wbh9-cor.
APA, 6th edition
Caldwell, M. W. (1854). Letter from Mary W. Caldwell (Forkland Grove, Georgia to "My dear sister Julia" - January 23, 1854 (typescript) (Box 2, Folder 2) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/003cz8wbh9-cor.
Chicago
Caldwell, Mary W. “Letter from Mary W. Caldwell (Forkland Grove, Georgia to ‘My Dear Sister Julia’ - January 23, 1854 (Typescript).” Letters (correspondence). Civil War Collection, 1854. Box 2, Folder 2. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/003cz8wbh9-cor.