Allison Engine Company - Air Power ... stripped for  Action!, 1941
<a href="//commons.wikimedia.org/wiki/Category:Allison_Engine_Company" title="Category:Allison Engine Company">Allison Engine Company</a>
1941-06-21
<a rel="nofollow" class="external text" href="https://archive.org/stream/LibertyV18N2519410621_201807#page/n46/mode/1up">Liberty Magazine, June 21, 1941</a>