Copper fragment

Chicago citation style
Unknown. Copper fragment. unknown. Retrieved from the Digital Public Library of America, http://www.idaillinois.org/cdm/ref/collection/isu2/id/621. (Accessed October 21, 2018.)
APA citation style
Unknown, (unknown) Copper fragment. Retrieved from the Digital Public Library of America, http://www.idaillinois.org/cdm/ref/collection/isu2/id/621
MLA citation style
Unknown. Retrieved from the Digital Public Library of America <http://www.idaillinois.org/cdm/ref/collection/isu2/id/621>.
Note: These citations are programmatically generated and may be incomplete.