Air Map

Chicago citation style
War Department. American Expeditionary Forces. Office of the Assistant Chief of Staff Second Section (G-2). 2/16/1918-8/15/1920. Air Map. 1916-06. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6997153. (Accessed September 20, 2018.)
APA citation style
War Department. American Expeditionary Forces. Office of the Assistant Chief of Staff Second Section (G-2). 2/16/1918-8/15/1920, (1916-06) Air Map. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6997153
MLA citation style
War Department. American Expeditionary Forces. Office of the Assistant Chief of Staff Second Section (G-2). 2/16/1918-8/15/1920. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/6997153>.
Note: These citations are programmatically generated and may be incomplete.