Photograph of King George VI (Army uniform) with Air Chief Marshal Sir Charles Portal in June 1943.
Unknown - presumably official British photographer
1943-06-25
Probert, H. (1991). High Commanders of the Royal Air Force. HMSO. <a href="//commons.wikimedia.org/wiki/Special:BookSources/0-11-772635-4" title="Special:BookSources/0-11-772635-4">ISBN 0-11-772635-4</a>.