MLA
Abbott, Nathan B., and Henry C. Eno. View of the Public Square of Atlanta, Georgia. 1865. Stuart A. Rose Manuscript, Archives, and Rare Book Library, OP29. https://digital.library.emory.edu/purl/013mw6mb73-cor.
APA, 6th edition
Abbott, N. B., & Eno, H. C. (1865). View of the Public Square of Atlanta, Georgia (OP29) [Engravings (prints)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/013mw6mb73-cor.
Chicago
Abbott, Nathan B., and Henry C. Eno. “View of the Public Square of Atlanta, Georgia.” Engravings (prints). Civil War Collection, 1865. OP29. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/013mw6mb73-cor.