MLA
Letter to Lewis L. Jones from His Father (Barren County, Kentucky). Jones' Home Was in Morgan County, Tennessee, and He Served in the 1st Tennessee Infantry Regiment (Union) - August 23, 1862. 1862. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 19, Folder 40. https://digital.library.emory.edu/purl/4407wm38s1-cor.
APA, 6th edition
Letter to Lewis L. Jones from his father (Barren County, Kentucky). Jones' home was in Morgan County, Tennessee, and he served in the 1st Tennessee Infantry Regiment (Union) - August 23, 1862 (Box 19, Folder 40). (1862). [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4407wm38s1-cor.
Chicago
“Letter to Lewis L. Jones from His Father (Barren County, Kentucky). Jones' Home Was in Morgan County, Tennessee, and He Served in the 1st Tennessee Infantry Regiment (Union) - August 23, 1862.” Letters (correspondence). Civil War Collection, 1862. Box 19, Folder 40. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4407wm38s1-cor.