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Acknowledgements
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This book began informally at UCLA in 1970 as an alternative to the data
structures course. Any book which takes six years to complete must 
have a list of acknowledgements.
Between  the 1970 manuscript and the  present
version stretches an incredible list of revisions and rewritings.
That task was made possible, if not bearable, by the document
preparation system at the Stanford Artificial Inteligence Laboratory.


The final shape of this book has been guided by many sources, but particularly
I would like to mention Dr. Michael Burke of San Jose State Mathematics, who
allowed me to use my manuscript in their data structures course.
To Nancy Meller of the UCLA Computer Science Dept for typing the
orginal LISP notes.
To Les Earnest of the Stanford A.I. Labs for aid beyond the call of duty.
To Jim Duley of Hewlett-Packard for persisting.
To Paulette for trying to understand. 
To Richard Madnuck of The Stanford Computer Science Dept Library, a most excellent
librarian.
To John McCarthy for establishing an environment at Stanford which
was conducive to research, and of course to  him for the
insight which lead to LISP.

To Tim Hart, who broke with a long standing tradition of the AI field
and answered a letter; that started it all.

Particular mention must go to  Guy Steele, who reviewed a much inferior
version of this text. His insights, comments, and criticisms 
were  invaluable. With comments like "that's not a compromise, it's a
bloody surrender!", the text was bound to improve.


Finally 
[JMC] [LES] [DBA] [GLS] Peter Milne, <BOYER>, <MOORE>,  Ward,
[MG], [FWH], and another [FWH], [JJM], [HJS], [JJK], McKeeman, [MJC],
[ACH], Russell, Doran, Stoyan, Corky, Friedman.[RPG] greussay.

organs: stanford ucla ucsc hpl

As always it is the author's responsibility for the final shape of a
document; the substantial and textual errors, errors of ommission and comission
are all mine. Each of the reviewers objected strongly to one or more facets
of this book; to some, it was too theoretical; for some, too  practical.
I must have done something right.
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\To my parents, John & Esther Allen
\\To my wife and friend, Ruth E. Davis
\\\To my sons, Christopher & Geoffrey.