Pilot's flying log book of 2nd Lieutenant William Munro Yool, 27 March 1917-28 November 1924

Yool records flights with No.22 Squadron September-October 1917 in France and then with No.39 Squadron January-October 1918. No.39 Squadron was a home defence fighter squadron equipped with the Bristol F.2b aircraft frequently known as the Bristol fighter to protect London from air attack.

Yool also records post-war flights with No.47 Squadron in Egypt and Sudan 1921-1924. Yool retired from the RAF in 1949 as an Air Vice Marshal.