book, scheme, MIT: Structure and Interpretation of Computer Programs

Wizard Book
free, complete text online

"Structure and Interpretation of Computer Programs" byHal Abelson, Jerry Sussman and Julie Sussman
(MIT Press, 1984; ISBN 0-262-01077-1),


an excellent computer science text used in introductory courses at MIT.

So called because of the wizard on the jacket.
One of the bibles of the LISP/Scheme world.
Also, less commonly, known as the Purple Book.

from The New Hacker's Dictionary, 2nd edition
(MIT Press, 1993)