Captains Everett Cook (91st Observation Squadron) and Reed McKinley Chambers (94th Pursuit Squadron) in front of a captured German Fokker D. VII.
Air Service, United States Army
1918
Air Service, United States Army photograph via Franks (1992) Over the Front: A Complete Record of the Fighter Aces and Units of the United States and French Air Services, 1914-1918 , Grub Street the Basement; First edition (May 1992), <a href="//commons.wikimedia.org/wiki/Special:BookSources/0948817542" title="Special:BookSources/0948817542">ISBN 0948817542</a>