Unidentified men with cannon mounted on caisson

Chicago citation style
Unidentified men with cannon mounted on caisson. 1850-1920. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/7p88d195c. (Accessed July 21, 2018.)
APA citation style
(1850-1920) Unidentified men with cannon mounted on caisson. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/7p88d195c
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/7p88d195c>.
Note: These citations are programmatically generated and may be incomplete.