Introduction: Why Lisp?.- Lather, Rinse, Repeat: A Tour of the REPL.- Practical: A Simple Database.- Syntax and Semantics.- Functions.- Variables.- Macros: Standard Control Constructs.- Macros: Defining Your Own.- Practical: Building a Unit Test Framework.- Numbers, Characters, and Strings.- Collections.- They Called It LISP for a Reason: List Processing.- Beyond Lists: Other Uses for Cons Cells.- Files and File I/O.- Practical: A Portable Pathname Library.- Object Reorientation: Generic Functions.- Object Reorientation: Classes.- A Few FORMAT Recipes.- Beyond Exception Handling: Conditions and Restarts.- The Special Operators.- Programming in the Large: Packages and Symbols.- LOOP for Black Belts.- Practical: A Spam Filter.- Practical: Parsing Binary Files.- Practical: An ID3 Parser.- Practical: Web Programming with AllegroServe.- Practical: An MP3 Database.- Practical: A Shoutcast Server.- Practical: An MP3 Browser.- Practical: An HTML Generation Library, the Interpreter.- Practical: An HTML Generation Library, the Compiler.- Conclusion: What's Next?.