"North Star Over My Shoulder" by Bob Buck (who also wrote "Weather Flying") is a great first hand account of flying from the 1930's into the 70's.
Funnily enough I also received Swampy's book for my birthday last year - a compilation of people's experience of the RFDS.
Can anyone recommend a good read (preferably autobiography) involving Australian/PNG/NZ flying that is in print/readily available?