MLA
Davis, Robert F. Letter from Robert F. Davis (Decatur, Georgia) to Judge Davis - March 22, 1863. 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 2, Folder 52. https://digital.library.emory.edu/purl/228ncjszjk-cor.
APA, 6th edition
Davis, R. F. (1863). Letter from Robert F. Davis (Decatur, Georgia) to Judge Davis - March 22, 1863 (Box 2, Folder 52) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/228ncjszjk-cor.
Chicago
Davis, Robert F. “Letter from Robert F. Davis (Decatur, Georgia) to Judge Davis - March 22, 1863.” Letters (correspondence). Civil War Collection, 1863. Box 2, Folder 52. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/228ncjszjk-cor.