Just discovered this book (which is infact a reprint). The claim that he was the pilot who flew the most operational missions sounds interesting: Amazon.co.uk: Pathfinder Cranswick: Books: Michael Cumming
Would make for some very interesting reading, Kyt. Am intrigued by the long range mail runs mentioned.
I was intending to be good this month but may just have to "invest" in a second hand copy. I gather the reprint is the one to get because it has far more photos etc.