ANSI Common Lisp

I finished most of ANSI Common Lisp. I got this one because it was made by Paul Graham who is well known in the Lisp community, and I have been trying to read as many programming books as possible. There seem to be more books on Lisp dialects then on virtual machines. Anyways, I already mentioned FSet as a possibility to add better support for sets and multisets to Common Lisp. Another possibility is to simply treat lists like sets and multisets. The Common Lisp function member is already available to you and a multiplicity function is easy to implement. One could imagine that my post on core data structures perhaps wasn't even necessary, all that is necessary is a Lisp.