Unfinished diagram of machinery

Chicago citation style
Proprietors of the Locks and Canals on Merrimack River. Unfinished diagram of machinery. 1822-1952. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/w6634b292. (Accessed July 22, 2018.)
APA citation style
Proprietors of the Locks and Canals on Merrimack River, (1822-1952) Unfinished diagram of machinery. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/w6634b292
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/w6634b292>.
Note: These citations are programmatically generated and may be incomplete.