(left to right): Heber Doust Curtis (1872-1942) and John Anthony Miller (1859-1946)

Chicago citation style
(left to right): Heber Doust Curtis (1872-1942) and John Anthony Miller (1859-1946). 1-24-1925. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_296610&repo=DPLA. (Accessed November 18, 2018.)
APA citation style
(1-24-1925) (left to right): Heber Doust Curtis (1872-1942) and John Anthony Miller (1859-1946). Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_296610&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_296610&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.