Paul R HarePaul R. Hare, a retired engineer, has made a lifelong study of early aviation, becoming a recognised authority in his field, and has publishing several books and numerous magazine articles various aspects of the first war in the air. He first began rsearching the failure of the American Aeroplane building Programme over 25 years ago and has lectured on the topic both in The UK and the USA as well as writing a number of articles about it, and about the Liberty engine that was crucial to it. Read More Read Less