MLA
Miles, W. E. Letter from W. E. Miles (Goldsboro, North Carolina) to His Sister, Elizabeth Fuller, Wife of J. V. Fuller - July 30, 1863. 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 3, Folder 29. https://digital.library.emory.edu/purl/368kd51d5r-cor.
APA, 6th edition
Miles, W. E. (1863). Letter from W. E. Miles (Goldsboro, North Carolina) to his sister, Elizabeth Fuller, wife of J. V. Fuller - July 30, 1863 (Box 3, Folder 29) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/368kd51d5r-cor.
Chicago
Miles, W. E. “Letter from W. E. Miles (Goldsboro, North Carolina) to His Sister, Elizabeth Fuller, Wife of J. V. Fuller - July 30, 1863.” Letters (correspondence). Civil War Collection, 1863. Box 3, Folder 29. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/368kd51d5r-cor.