"This is an excellent book on Lisp implementation. You'll get a lot out of it, whether you are interested in writing compilers and interpreters (for Lisp or any

"This is an excellent book on Lisp implementation. You'll get a lot out of it, whether you are interested in writing compilers and interpreters (for Lisp or any language) or whether you just want to see how Lisp works. It is the modern day successor to Allen's "Anatomy of Lisp"." Peter Norvig