MLA
Star Belonging to the Confederate Flag That Flew over the Grave of Confederate General Thomas "Stonewall" Jackson as Well as a Letter from an Unidentified Person to [?] Thorne Documenting the Authenticity of the Star. 1869. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 10, Folder 4. https://digital.library.emory.edu/purl/774qjq2cxd-cor.
APA, 6th edition
Star belonging to the Confederate Flag that flew over the grave of Confederate general Thomas "Stonewall" Jackson as well as a letter from an unidentified person to [?] Thorne documenting the authenticity of the star (Box 10, Folder 4). (1869). [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/774qjq2cxd-cor.
Chicago
“Star Belonging to the Confederate Flag That Flew over the Grave of Confederate General Thomas ‘Stonewall’ Jackson as Well as a Letter from an Unidentified Person to [?] Thorne Documenting the Authenticity of the Star.” Letters (correspondence). Civil War Collection, 1869. Box 10, Folder 4. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/774qjq2cxd-cor.