MLA
Johnston, Herman L. 1902. Oxford College Library (Oxford, Ga.), OP 1902. https://digital.library.emory.edu/purl/569z08kqrz-cor.
APA, 6th edition
Johnston, Herman L. (OP 1902). (1902). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/569z08kqrz-cor.
Chicago
“Johnston, Herman L.” Black-and-white photographs. Early Emory College Photographs, 1902. OP 1902. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/569z08kqrz-cor.