MLA
McCullough, Frank. 1893. Oxford College Library (Oxford, Ga.), Box 4, Folder 30. https://digital.library.emory.edu/purl/303qv9s5mc-cor.
APA, 6th edition
McCullough, Frank (Box 4, Folder 30). (1893). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/303qv9s5mc-cor.
Chicago
“McCullough, Frank.” Black-and-white photographs. Early Emory College Photographs, 1893. Box 4, Folder 30. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/303qv9s5mc-cor.