MLA
Thomson, R. M. 1894. Oxford College Library (Oxford, Ga.), Box 4, Folder 74. https://digital.library.emory.edu/purl/511xd2556x-cor.
APA, 6th edition
Thomson, R. M. (Box 4, Folder 74). (1894). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/511xd2556x-cor.
Chicago
“Thomson, R. M.” Black-and-white photographs. Early Emory College Photographs, 1894. Box 4, Folder 74. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/511xd2556x-cor.