Letter from Second Lieutenant Henry E. Pengilly to the Adjutant General of the Army

Chicago citation style
War Department. Division of Military Aeronautics. School of Military Aeronautics, University of Illinois. 5/20/1918-3/19/1919. Letter from Second Lieutenant Henry E. Pengilly to the Adjutant General of the Army. 1918-11-23. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/20762211. (Accessed July 17, 2018.)
APA citation style
War Department. Division of Military Aeronautics. School of Military Aeronautics, University of Illinois. 5/20/1918-3/19/1919, (1918-11-23) Letter from Second Lieutenant Henry E. Pengilly to the Adjutant General of the Army. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/20762211
MLA citation style
War Department. Division of Military Aeronautics. School of Military Aeronautics, University of Illinois. 5/20/1918-3/19/1919. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/20762211>.
Note: These citations are programmatically generated and may be incomplete.