MLA
Clark, Henry T. (Henry Toole), 1808-1874. Document signed by Henry T. Clark notifying George Davis, of his election as Confederate States Senator, Raleigh, North Carolina. December 16, 1861. Civil War Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/2902z34vkw-cor.
APA, 6th edition
Clark, Henry T. (Henry Toole), 1808-1874. (December 16, 1861)[Document signed by Henry T. Clark notifying George Davis, of his election as Confederate States Senator, Raleigh, North Carolina]. Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/2902z34vkw-cor.
Chicago
Clark, Henry T. (Henry Toole), 1808-1874, Document signed by Henry T. Clark notifying George Davis, of his election as Confederate States Senator, Raleigh, North Carolina, December 16, 1861, Civil War Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/2902z34vkw-cor.