it seems some of the titles mentioned are autobiographies and stories from pilots.
Dont discount these - some important lessons of a different kind. You'll be glad you read them!
Another vote for "Little Book of Autorotations" - available in electronic form from Amazon
Also worth becoming familiar with the work of the IHST (International Helicopter Safety Team). Not aware of books per se but much info here:
Reel Safety Videos
Also read the NTSB accident reports and/or equivalent for countries other than the U.S. Available here:
http://ntsb.gov/_layouts/ntsb.aviation/index.aspx CAUTION! Thse may change your mind about becoming a helicopter pilot!