Unidentified flight event

Chicago citation style
Unidentified flight event. circa 1850-1920. Retrieved from the Digital Public Library of America, http://libx.bsu.edu/cdm/ref/collection/MunHisPhoto/id/1731. (Accessed July 20, 2018.)
APA citation style
(circa 1850-1920) Unidentified flight event. Retrieved from the Digital Public Library of America, http://libx.bsu.edu/cdm/ref/collection/MunHisPhoto/id/1731
MLA citation style
Retrieved from the Digital Public Library of America <http://libx.bsu.edu/cdm/ref/collection/MunHisPhoto/id/1731>.
Note: These citations are programmatically generated and may be incomplete.