MLA
Rogers, J. P. Letter from J. P. Rogers (Camp Lookout Bridge, Tennessee) to "Dear Sister" (North Bend, Alabama) - March 24, 1863. 1863. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 6, Folder 2. https://digital.library.emory.edu/purl/0343r228qp-cor.
APA, 6th edition
Rogers, J. P. (1863). Letter from J. P. Rogers (Camp Lookout Bridge, Tennessee) to "Dear Sister" (North Bend, Alabama) - March 24, 1863 (Box 6, Folder 2) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0343r228qp-cor.
Chicago
Rogers, J. P. “Letter from J. P. Rogers (Camp Lookout Bridge, Tennessee) to ‘Dear Sister’ (North Bend, Alabama) - March 24, 1863.” Letters (correspondence). Civil War Collection, 1863. Box 6, Folder 2. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0343r228qp-cor.