19th Fighter Squadron emblem.  Approved 20 April 1928 for the 19th Pursuit Squadron.
<a href="https://en.wikipedia.org/wiki/United_States_Army_Institute_of_Heraldry" class="extiw" title="en:United States Army Institute of Heraldry">en:United States Army Institute of Heraldry</a>
<a rel="nofollow" class="external free" href="http://www.inpayne.com/dad/squaw.html">http://www.inpayne.com/dad/squaw.html</a>