Here are a few good authors, reading their software is very educational - a) Edi Weitz - http://weitz.de/ http://weitz.de/. Writes very clean and well document

Here are a few good authors, reading their software is very educational - a) Edi Weitz - http://weitz.de/ http://weitz.de/. Writes very clean and well documented code. b) Paul Graham - The On Lisp book examples, http://arclanguage.org/install http://arclanguage.org/install (for the source code of news.ycombinator ) c) The Code in - "The Little Schemer" - the best introduction to the lisp way of thinking.