474th Aero Squadron - History
Air Service, United States Army
1918
<a rel="nofollow" class="external free" href="https://www.fold3.com/image/19067916">https://www.fold3.com/image/19067916</a> Gorrell's History of the American Expeditionary Forces Air Service, 1917-1919 Series: E Squadron Histories Volume: 23 Volume Description: 400th, 462d-470th, 474th, and 480th-500th Aero Squadron