Grist mill. Vane to indicate water direction

Chicago citation style
Proprietors of the Locks and Canals on Merrimack River. Grist mill. Vane to indicate water direction. 1857-10-2. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/w6634d96b. (Accessed June 24, 2018.)
APA citation style
Proprietors of the Locks and Canals on Merrimack River, (1857-10-2) Grist mill. Vane to indicate water direction. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/w6634d96b
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/w6634d96b>.
Note: These citations are programmatically generated and may be incomplete.