MLA
Duncan, F. N. 1906. Oxford College Library (Oxford, Ga.), OP 1906. https://digital.library.emory.edu/purl/296wwpzhmd-cor.
APA, 6th edition
Duncan, F. N. (OP 1906). (1906). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/296wwpzhmd-cor.
Chicago
“Duncan, F. N.” Black-and-white photographs. Early Emory College Photographs, 1906. OP 1906. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/296wwpzhmd-cor.