Fragment of 1942 Canadian Air Navigation Chart used by the Royal Canadian Air Force.    The Jarvis air station and its bombing ranges can be clearly seen at centre bottom.
Canada Department of Mines and Resources, Surveys and Engineering Branch,Hydrographic and Map Service, 1942
British Commonwealth Air Training Plan Museum via Flight Ontario Website. <a rel="nofollow" class="external free" href="http://www.flightontario.com/BCATP/bcatp-schools.htm">http://www.flightontario.com/BCATP/bcatp-schools.htm</a>