Apparatus for back gates

Chicago citation style
Proprietors of the Locks and Canals on Merrimack River. Apparatus for back gates. 1854-10-05. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/w6634b712. (Accessed July 23, 2018.)
APA citation style
Proprietors of the Locks and Canals on Merrimack River, (1854-10-05) Apparatus for back gates. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/w6634b712
MLA citation style
Proprietors of the Locks and Canals on Merrimack River. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/w6634b712>.
Note: These citations are programmatically generated and may be incomplete.