kentsboro. If you are talking about Bobby's autobiography "You Live But Once" I'm sorry, you are out of luck. Bobby privately funded the publication in very limited numbers and it sold out some years ago. I have a personal signed copy.
I suggested to his family they try to locate the manuscript with a view to a soft cover reprint.
Tinpis. I know where there may be a copy of Jim Sinclair's "Sepik Pilot" which may be available. Contact me.