MLA
Letter from Gideon Merritt (Alexandria, Virginia) to "Dear Cousin." Merritt, a Soldier in the Pennsylvania Light Artillery Regiment, Battery H, Mentions News of General Grant and Politics - June 17, 1864 (Typescript). 1864. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 20, Folder 2. https://digital.library.emory.edu/purl/156zw3r37r-cor.
APA, 6th edition
Letter from Gideon Merritt (Alexandria, Virginia) to "Dear Cousin." Merritt, a soldier in the Pennsylvania Light Artillery Regiment, Battery H, mentions news of General Grant and politics - June 17, 1864 (typescript) (Box 20, Folder 2). (1864). [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/156zw3r37r-cor.
Chicago
“Letter from Gideon Merritt (Alexandria, Virginia) to ‘Dear Cousin." Merritt, a Soldier in the Pennsylvania Light Artillery Regiment, Battery H, Mentions News of General Grant and Politics - June 17, 1864 (Typescript).” Letters (correspondence). Civil War Collection, 1864. Box 20, Folder 2. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/156zw3r37r-cor.