MLA
Wiley, Bell Irvin, 1906-1980. Letter from Bell I. Wiley to Emory history professor John Harper regarding the possibility of Emory Special Collections Library making a typescript copy of the Harper Civil War diary - May 28, 1959. May 29, 1959. Civil War Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/337vmcvfr2-cor.
APA, 6th edition
Wiley, Bell Irvin, 1906-1980. (May 29, 1959)[Letter from Bell I. Wiley to Emory history professor John Harper regarding the possibility of Emory Special Collections Library making a typescript copy of the Harper Civil War diary - May 28, 1959]. Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/337vmcvfr2-cor.
Chicago
Wiley, Bell Irvin, 1906-1980, Letter from Bell I. Wiley to Emory history professor John Harper regarding the possibility of Emory Special Collections Library making a typescript copy of the Harper Civil War diary - May 28, 1959, May 29, 1959, Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/337vmcvfr2-cor.