H.W. Thornton, portrait photograph

Chicago citation style
H.W. Thornton, portrait photograph. 1893. Retrieved from the Digital Public Library of America, http://dla.library.upenn.edu/dla/archives/image.html?id=ARCHIVES_20051013047. (Accessed September 26, 2018.)
APA citation style
(1893) H.W. Thornton, portrait photograph. Retrieved from the Digital Public Library of America, http://dla.library.upenn.edu/dla/archives/image.html?id=ARCHIVES_20051013047
MLA citation style
Retrieved from the Digital Public Library of America <http://dla.library.upenn.edu/dla/archives/image.html?id=ARCHIVES_20051013047>.
Note: These citations are programmatically generated and may be incomplete.