Map of the eclipse of Feby. 12th in its passage across the United States

Chicago citation style
Gray and Bowen. Map of the eclipse of Feby. 12th in its passage across the United States. 1831. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/7h149x20j. (Accessed June 22, 2018.)
APA citation style
Gray and Bowen, (1831) Map of the eclipse of Feby. 12th in its passage across the United States. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/7h149x20j
MLA citation style
Gray and Bowen. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/7h149x20j>.
Note: These citations are programmatically generated and may be incomplete.