MLA
Davis, Gustavus A. 1903. Oxford College Library (Oxford, Ga.), OP 1903. https://digital.library.emory.edu/purl/986b2rbpzp-cor.
APA, 6th edition
Davis, Gustavus A. (OP 1903). (1903). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/986b2rbpzp-cor.
Chicago
“Davis, Gustavus A.” Black-and-white photographs. Early Emory College Photographs, 1903. OP 1903. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/986b2rbpzp-cor.