Signal light, Hancock and Washington Streets

Chicago citation style
Parker, Warren S. Signal light, Hancock and Washington Streets. 1870-1930. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/ff3659405. (Accessed July 18, 2018.)
APA citation style
Parker, Warren S, (1870-1930) Signal light, Hancock and Washington Streets. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/ff3659405
MLA citation style
Parker, Warren S. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/ff3659405>.
Note: These citations are programmatically generated and may be incomplete.