MLA
Reagan, Frank. 1899. Oxford College Library (Oxford, Ga.), OP 1899. https://digital.library.emory.edu/purl/392g79cpps-cor.
APA, 6th edition
Reagan, Frank (OP 1899). (1899). [Black-and-white photographs]. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/392g79cpps-cor.
Chicago
“Reagan, Frank.” Black-and-white photographs. Early Emory College Photographs, 1899. OP 1899. Oxford College Library (Oxford, Ga.). https://digital.library.emory.edu/purl/392g79cpps-cor.