Practical Foundations for Programming Languages
amazon.com
amazon.com
(Get it while you can... Publishers often require authors to take down drafts once the book is published.)
This book is published by Cambridge University Press who have a good track record for allowing electronic copies to stay up [1]. It will be interesting to see how they adapt as e-readers become a compelling alternative to hard-copy for this type of text of book. I'm afraid I won't like the answer.
[1] Examples: http://www.stanford.edu/~boyd/cvxbook/ http://www.inference.phy.cam.ac.uk/mackay/itila/book.html
That said, this master tome is not light reading, but I really should take a week this fall to work through it!
Here's a recent HN discussion: http://news.ycombinator.com/item?id=4380900