Oh, yeah, it's a very good book. I'm on Ch5. I havn't come across those books in our library yet, but I'll keep an eye out for them. I'm always looking for math history books. It does give some idea of where I need to go in it.
If you have the passion to pursue mathematics on your own, and you want it without the incomprehensible notation of ordinary textbooks, I would recommend the Art of Problem Solving Books. They're not particularly cheap, but they cost less than most textbooks, and they lead you through mathematics in a manner that focuses on intuitive understanding. They can be ordered at http://www.artofproblemsolving.com.
I would also recommend The Art and Craft of Problem Solving - which can be bought on amazon.
There are excerpts for the first one on their website.