7th Observation Squadron (later 3d Composite Squadron) emblem.  Approved 13 February 1943.
<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>
1943-02-13
<cite style="font-style:normal"> (1943). "<a rel="nofollow" class="external text" href="http://archive.nationalgeographic.com/dynamic/National%20Geographic%20Society/National%20Geographic/Landing.aspx">Aircraft Insignia, Spirit of Youth</a>". <i>The National Geographic Magazine</i> <b>Vol. LXXXIII</b> (No. 6): 718-722. National Geographic Society. Retrieved on <span class="mw-formatted-date" title="2017-09-01">September 1, 2017</span>.</cite> (subscription required for web access)  and <cite class="book" style="font-style:normal">Maurer, Maurer , ed.  (1982) [1969] <i> <a rel="nofollow" class="external text" href="http://media.defense.gov/2010/Dec/02/2001329899/-1/-1/0/AFD-101202-002.pdf">Combat Squadrons of the Air Force, World War II</a></i> (reprint ed.), <a href="//commons.wikimedia.org/wiki/Category:Washington,_DC" title="Category:Washington, DC">Washington, DC</a>:  Office of Air Force History, p. 21 Retrieved on December 17, 2016. <small><a href="https://en.wikipedia.org/wiki/International_Standard_Book_Number" class="extiw" title="en:International Standard Book Number">ISBN</a>:  <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-405-12194-6" title="Special:BookSources/0-405-12194-6">0-405-12194-6</a>.  <a href="https://en.wikipedia.org/wiki/Online_Computer_Library_Center" class="extiw" title="en:Online Computer Library Center">OCLC</a>:   <a rel="nofollow" class="external text" href="https://www.worldcat.org/oclc/72556">72556</a>. </small></cite> edited with Microsoft Paint