(left to right): Harvey Williams Cushing (1869-1939) and James Bryant Conant (1893-1978)

Chicago citation style
(left to right): Harvey Williams Cushing (1869-1939) and James Bryant Conant (1893-1978). April 1935. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_296613&repo=DPLA. (Accessed November 15, 2018.)
APA citation style
(April 1935) (left to right): Harvey Williams Cushing (1869-1939) and James Bryant Conant (1893-1978). Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_296613&repo=DPLA
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_296613&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.