Hello Genghis
It would appear that you have acquired a rare gem. I read about this in the sleeve notes of 'The Lonely Sea and the Sky' and tried to get a copy from our local library as I thought I could use it as the basis of a quiz night event for one of the flying clubs I'm involved with. After a lengthy period I was informed that there wasn't a copy in the library system but that the British Museum might have one. I gave up at this point. I'm sure that I'm not the only one who would like to have a look at this, so if you could have it scanned and posted that would be great. As long as you don't get done for copyright infringement!