CADR source code? anyone?

If I said, "gee, I'd like to look at the lisp code which ran on a CADR
and maybe paw around inside a CADR world file",

Would there be any hope I'd could find anything at this post 19xx date?

I'm quite happy to read old 9-track or 1/4" tapes... or even an SMD
disk.

(reading one of those rk05-ish disks from a nu-machine might be tough,
however :-)


Did any of that software make the jump to something which might be on the
internet today?

-brad

ps: I just subscribed to this list (heh), and don't know if it's automated
so please cc' me in any replies...  ("is there anybody out there?" :-)