Above the Trenches : A Complete Record of the Fighter Aces and Units of the British Empire Air Forces, 1915-1920 (fr)
The Making of Billy Bishop (fr)
Above the War Fronts : The British Two-seater Bomber Pilot and Observer Aces, the British Two-seater Fighter Observer Aces, and the Belgian, Italian, Austro-Hungarian and Russian Fighter Aces, 1914-1918 (fr)