MLA
Spencer, Thomas. Unveiling of Monument in the Memory of William Thomas Overby in Newnan, Georgia. 1956. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 15, Folder 1. https://digital.library.emory.edu/purl/40644j10rs-cor.
APA, 6th edition
Spencer, T. (1956). Unveiling of monument in the memory of William Thomas Overby in Newnan, Georgia (Box 15, Folder 1) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/40644j10rs-cor.
Chicago
Spencer, Thomas. “Unveiling of Monument in the Memory of William Thomas Overby in Newnan, Georgia.” Black-and-white photographs. Civil War Collection, 1956. Box 15, Folder 1. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/40644j10rs-cor.