Copies of papers and photographs relating to his military career, 1915-[1921], dated 1915-[1921], [1970-1980] and 1983, principally comprising letters to his father, 1915-1916; his flying log book, 1915-1917, covering his service with 1 Reserve Aeroplane Sqn, Royal Flying Corps, UK and with 8 and 12 Sqns, BEF, France; notes and texts of lectures relating to aerial combat tactics, produced by instructors at the Royal Flying Corps School of Aerial Gunnery, 1916; his diary, 1918, including details of his work [as an experimental pilot with the Aircraft Directorate and the Air Board]; notebook containing notes on the performance of various aircraft, [1918-1921]; 'Memoir of service with the Royal Flying Corps, 1915 and 1916', written in [1970-1980].