I got this book for Christmas and it's a very good read if you want to know more about Robert Noyce, an early Silicon Valley titan. My book reviews are generally short...either 'Good' or 'Bad'. If it gets a 'Good', check it out! :)
There's also a Silicon Genesis video archive project where they interview lots of early SV guys. These guys are also detailed in the book Microcosm, which is all about the development of Silicon Valley.
http://silicongenesis.stanford.edu/