The historical plaque in front of the Airmens' Canteen, London International Airport, London, Ontario, Canada.   The plaque describes No. 3 Elementary Flying Training School and No. 4 Air Observer School, British Commonwealth Air Training Plan, World War II.
<a href="//commons.wikimedia.org/wiki/User:SteveTheAirman" title="User:SteveTheAirman">John S. Bond</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>