He haunts the Good Will sometimes, knowing it's a place to score finds and today found a really great condition copy of a classic by Linus Pauling and E. Bright Wilson, which one is welcome to read for free on the Web:
Not that this book is light reading by any means. Pauling was a good clear writer in general though, Glenn points out, and I assume Wilson was too.
He also shared several other titles which you can take a look at by entering my Flickr Photostream, by clicking on either picture above.