You can download many of the MIT AI Lab publications from
http://www.ai.mit.edu/publications/
It is possible to:
- Order a hardcopy of any publication (for a charge). It will arrive as a collection of xerox sheets, either stapled or fairly nicely bound, depending on length.
- Obtain a PDF of most publications, again, sometimes at a charge.
- View a GIF of any page of most publications, often without charge even if there is a charge for the PDF version.
- Get totally lost on the site.
These are some documents of note there which are free:
- Lambda: The Ultimate Imperative -- GuySteele and GeraldSussman
- An Interpreter for Extended Lambda Calculus -- GeraldSussman and GuySteele
- Debunking the "Expensive Procedure Call" Myth or, Procedure Call Implementations Considered Harmful or, LAMBDA: The Ultimate GOTO -- GuySteele
- Jokes and the Logic of the Cognitive Unconscious
- EMACS: The Extensible, Customizable, Self-Documenting Display Editor -- RichardStallman
- A Regularized Solution to Edge Detection -- Tomaso Poggio, Harry Voorhees, and Alan Yuille