MLA
Spencer, Thomas. 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/276f1vhjqq-cor.
APA, 6th edition
Spencer, T. (1956). 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/276f1vhjqq-cor.
Chicago
Spencer, Thomas. “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/276f1vhjqq-cor.