MLA
Davis, John A. Letter from Captain John A. Davis (Albany, Georgia), Quartermaster; from Albany, Georgia Tells Mr. Garmany That There Is No Chance of Shipping Anything as the Enemy Has Possession of Macon and No Trains Are Operating - April 24, 1865. 1865. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 2, Folder 51. https://digital.library.emory.edu/purl/511xd2556t-cor.
APA, 6th edition
Davis, J. A. (1865). Letter from Captain John A. Davis (Albany, Georgia), quartermaster; from Albany, Georgia tells Mr. Garmany that there is no chance of shipping anything as the enemy has possession of Macon and no trains are operating - April 24, 1865 (Box 2, Folder 51) [Letters (correspondence)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/511xd2556t-cor.
Chicago
Davis, John A. “Letter from Captain John A. Davis (Albany, Georgia), Quartermaster; from Albany, Georgia Tells Mr. Garmany That There Is No Chance of Shipping Anything as the Enemy Has Possession of Macon and No Trains Are Operating - April 24, 1865.” Letters (correspondence). Civil War Collection, 1865. Box 2, Folder 51. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/511xd2556t-cor.