G. Allan Hancock, with benthograph camera

Chicago citation style
Unknown. G. Allan Hancock, with benthograph camera. undated. Retrieved from the Digital Public Library of America, http://www.luna.blackgold.org/luna/servlet/detail/blackgold~10~10~26~1773. (Accessed December 14, 2018.)
APA citation style
Unknown, (undated) G. Allan Hancock, with benthograph camera. Retrieved from the Digital Public Library of America, http://www.luna.blackgold.org/luna/servlet/detail/blackgold~10~10~26~1773
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://www.luna.blackgold.org/luna/servlet/detail/blackgold~10~10~26~1773>.
Note: These citations are programmatically generated and may be incomplete.