My (pricey) favourite is Lisp In Small Pieces: http://www.amazon.com/Lisp-Small-Pieces-Christian-Queinnec/d...

Note that Peter Norvig gives it a five-star review.

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Correct me if I'm wrong, but wasn't "How to Create Your Own Freaking Awesome Programming Language" the motivation for CoffeeScript. That alone should be enough motivation for sending your money that way.

You're correct. That's why the first version was written in Ruby :)

To add to the list, Peter Norwig's lisp interpreter is a short, concise introduction to interpreters.

http://norvig.com/lispy.html

http://norvig.com/lispy2.html

Another one I recommend, because it starts with codegen and works its way back:

Writing a compiler in Ruby, bottom up: http://www.hokstad.com/compiler