A good friend, Boyko Bantchev, has compiled a collection of personal web pages of computer scientists and mathematicians; among them are Abelson, Baker, Gabriel, Graham, Greenspun, McCarthy, Norvig, Pitman, and Stallman (to mention just those who are directly related to the topic of this site; there are many others equally or more prominent).
Humpty-Dumpty to Lisp was in thrall,
Humpty-Dumpty played with
All the King's conses on the royal PDP-10
Couldn't intern Humpty-Dumpty again.
By the way, did you know that there is a Humpty-Dumpty reference in the LISP 1.5 Programmer's Manual?
Happy New Year!
Even if you have seen this before, I hope you will admire the quality of a good numeric implementation:
> (/ (log -1) (sqrt -1)) 3.1415927 > (typep * 'real) T