Emblem of the 418th Bombardment Squadron (World War II)
United States Army Air Force
United States Air Force via Maurer, Maurer. Combat Squadrons of the Air Force, World War II. Maxwell AFB, Alabama: Air Force Historical Studies Office, 1969. <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-89201-097-5" title="Special:BookSources/0-89201-097-5">ISBN 0-89201-097-5</a>.