Looking for good Lisp code to read [duplicate]

Question

Possible Duplicate:
Examples of excellent Common Lisp code?

I'm currently trying to get proficient in Common Lisp and to learn some of the tricks for writing compact, clear and beautiful code in it.

So, I want to know if you have any sources of good Common Lisp, preferably free and online but books are also OK.

Answer 1

The most admirable modern Common Lisp I've seen is in Edi Weitz's libraries. (Look within the outline area NerdStuff/Common Lisp/Code available on this server.) His CL-PPCRE library is worth studying in depth.