I just checked out a cop of Bill Rancic's book, Beyond the Lemonade Stad, from the public library. I was disappointed to find out that it's actually a children's book. Still well-written (at least, based on some cursory skimming), but not quite what I was looking for.
Wish I had read a book like this when I was seven years old. I was much more into science than finance or business, but still... it's the sort of thing that would have helped broaden my horizons.