These are all really good value comprehensive works on their stated subjects. The format is attractive and the presentation excellent. As the titles indicate, the pilots rather than the aircraft are the stars, although there are many excellent (by the standards of the era) photographs of aircraft as well as men, and at least 40 pieces of original art work (by Harry Dempsey) in each volume, together with many scale drawings.

The Americans, who arrived with nothing on the Western Front, contributed mightily.

I feel that a gap has been very adequately filled in the bibliography of World War I aviation with the publication of these monographs, and await the succeeding volumes promised (including SPAD XIII) eagerly.