Man posing for a portrait, place unknown, date unknown

Chicago citation style
Man posing for a portrait, place unknown, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/426. (Accessed October 16, 2018.)
APA citation style
Man posing for a portrait, place unknown, date unknown. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/426
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/nps/id/426>.
Note: These citations are programmatically generated and may be incomplete.