Copy letter from Robert William Frederick Harrison, to Eric Stuart Bruce, Honorary Secretary, The Aeronautical Society of Great Britain, Westminster 'Dear Sir, I have to acknowledge the receipt of your letter of the 12th inst. which will be laid before the President and Council of the Royal Society at their next meeting. I am, Sir, Faithfully yours, Robt Harrison Asst. Sec. R. S. [Assistant Secretary, Royal Society]'. 15 December 1902