501st Bombardment Squadron emblem.  Approved 8 April 1958 based on World War II emblem.
<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>
1958-04-08
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