MLA
Jackson, Henry R. (Henry Rootes), 1820-1898. Letter from Henry Rootes Jackson (Savannah, Georgia) to W. J. DeRenne (Savannah, Georgia), invitation to attend a meeting of the officers of the Georgia Historical Society - March 10, 1896. March 10, 1896. Civil War Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3s62-cor.
APA, 6th edition
Jackson, Henry R. (Henry Rootes), 1820-1898. (March 10, 1896)[Letter from Henry Rootes Jackson (Savannah, Georgia) to W. J. DeRenne (Savannah, Georgia), invitation to attend a meeting of the officers of the Georgia Historical Society - March 10, 1896]. Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3s62-cor.
Chicago
Jackson, Henry R. (Henry Rootes), 1820-1898, Letter from Henry Rootes Jackson (Savannah, Georgia) to W. J. DeRenne (Savannah, Georgia), invitation to attend a meeting of the officers of the Georgia Historical Society - March 10, 1896, March 10, 1896, Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3s62-cor.