Two weeks ago, during this year's AspInsiders summit, I got ahold of a 1982 (!) copy of "The Soul of a New Machine" at Half Price Books. I still have to decide whether the equally ancient Continental boarding pass DEN-SEA used as a bookmark will be kept too (I guess so), but the book is definitely worth your time - be it for a computer history lesson, or on the "signing up" concept and all other project management topics being touched on (without it being a pm book). The story in itself is more than fascinating, so although old by now, it does come highly recommended.