Long distance telephone switchboard

Chicago citation style
Long distance telephone switchboard. 1893-1920. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/nk322r32k. (Accessed June 21, 2018.)
APA citation style
(1893-1920) Long distance telephone switchboard. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/nk322r32k
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/nk322r32k>.
Note: These citations are programmatically generated and may be incomplete.