MLA
Callahan, W. J. 1891. Oxford College Library (Oxford, Ga.), Box 3, Folder 70. https://digital.library.emory.edu/purl/313zs7h550-cor.
APA, 6th edition
Callahan, W. J. (Box 3, Folder 70). (1891). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/313zs7h550-cor.
Chicago
“Callahan, W. J.” Black-and-white photographs. Early Emory College Photographs, 1891. Box 3, Folder 70. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/313zs7h550-cor.