MLA
Spencer, Thomas. Clisby Austin House in Chickamauga, Georgia. Union General William Tecumseh Sherman Had His Headquarters Here in May 1864. 1947. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 9. https://digital.library.emory.edu/purl/972p5hqd2t-cor.
APA, 6th edition
Spencer, T. (1947). Clisby Austin House in Chickamauga, Georgia. Union general William Tecumseh Sherman had his headquarters here in May 1864 (Box 14, Folder 9) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/972p5hqd2t-cor.
Chicago
Spencer, Thomas. “Clisby Austin House in Chickamauga, Georgia. Union General William Tecumseh Sherman Had His Headquarters Here in May 1864.” Black-and-white photographs. Civil War Collection, 1947. Box 14, Folder 9. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/972p5hqd2t-cor.