Found in 5 Collections and/or Records:
Letters to the Royal Society of Arts, mainly relating to his proposed lectures on (and subsequent manuscripts relating to) aerial reconnaisance, with additional information about his other commitments in Cambridge.
Letter to the Secretary of the Royal Society of Arts with proposed titles for his lectures in early 1920, 1919-10-08
His proposed lectures (in January or February 1920) will be: The taking and production of aerial photographs; The employment of aerial photographs in war; The use of aerial photographs in exploration and survey in times of peace. He intends to cover also the apparatus and methods of the Germans [during the war].