MLA
Spencer, Thomas. Alfred Rudolph Waud Tombstone in Marietta, Georgia. Waud Was an Artist and Illustrator Who Was Famous for the Sketches He Drew during the Civil War. 1940. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 14, Folder 21. https://digital.library.emory.edu/purl/723hx3fgf8-cor.
APA, 6th edition
Spencer, T. (1940). Alfred Rudolph Waud tombstone in Marietta, Georgia. Waud was an artist and illustrator who was famous for the sketches he drew during the Civil War (Box 14, Folder 21) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/723hx3fgf8-cor.
Chicago
Spencer, Thomas. “Alfred Rudolph Waud Tombstone in Marietta, Georgia. Waud Was an Artist and Illustrator Who Was Famous for the Sketches He Drew during the Civil War.” Black-and-white photographs. Civil War Collection, 1940. Box 14, Folder 21. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/723hx3fgf8-cor.