MLA
Hort, E. B. To the Clergy and Lay Members of the Evangelical Lutheran Church, South. [publisher not identified], 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4816m908r4-cor.
APA, 6th edition
Hort, E. B. (1861). To the clergy and lay members of the Evangelical Lutheran Church, South. [Southern imprint]. [publisher not identified]; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4816m908r4-cor.
Chicago
Hort, E. B. “To the Clergy and Lay Members of the Evangelical Lutheran Church, South.” Southern imprint. Civil War Imprints. [Columbia, S.C.]: [publisher not identified], 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4816m908r4-cor.