Might be worth looking at, the 120 page pdf:
http://aerosociety.com/Assets/Docs/Publications/The%20Journal%20of%20Aeronautical%20History/2013-01_HawkStory-Fraser-Mitchell.pdf
http://aerosociety.com/Assets/Docs/Publications/The%20Journal%20of%20Aeronautical%20History/2013-01_HawkStory-Fraser-Mitchell.pdf