Sun dial on Rock Island Arsenal, Rock Island, Illinois

Chicago citation style
Sun dial on Rock Island Arsenal, Rock Island, Illinois. 1930-1945. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/pg15bk540. (Accessed June 20, 2018.)
APA citation style
(1930-1945) Sun dial on Rock Island Arsenal, Rock Island, Illinois. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/pg15bk540
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/pg15bk540>.
Note: These citations are programmatically generated and may be incomplete.