Lisp in Small Parts
by David Johnson-Davies
The tutorials are aimed at someone with no previous experience of programming, and they are designed to take the reader to the stage where they can start writing their own programs to solve practical, interesting applications.
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by Doug Hoyte - Lulu.com
One of the most hardcore computer programming books out there. Starting with the fundamentals, it describes the most advanced features of the most advanced language: Common Lisp. This book is about macros, that is programs that write programs.
by Robert A. MacLachlan
This text documents internal details of the CMU Common Lisp compiler and run-time system. CMU Common Lisp is a public domain implementation of Common Lisp that runs on Unix workstations. It provides some useful information on the CMUCL compiler.
by Bil Lewis, Dan LaLiberte, Richard Stallman - Free Software Foundation
This manual attempts to be a full description of Emacs Lisp. Emacs Lisp is more than a mere 'extension language'; it is a full computer programming language in its own right. You can use it as you would any other programming language.
by Guy Steele - Digital Press
The book is an unofficial Lisp programmers' bible. All functions defined in Common Lisp and every specification can be found here. The second edition contains six completely new chapters on CLOS, loops, conditions, series, generators and more.