Here is the source code to LLogo in MACLISP, which I stashed from the MIT-AI ITS system. It's a fascinating historical document, 12,480 lines of beautiful practical lisp code, defining where the rubber meets the road, with drivers for hardware like pots, plotters, robotic turtles, TV turtles, graphical displays, XGP laser printers, music devices, and lots of other interesting code and comments.
Here is a Logo Adventure game I wrote for Terrapin, the first program I ever sold, which they distributed with C64 Terrapin Logo, because they wanted a simple non-graphical game that showed off Logo's list processing capabilities:
Seymour Papert greatly inspired me, and I applied his work on Constructionist Education to the open source version of SimCity for the OLPC.
Just take a look at Hubert Dreyfus' work to better understand the issue.
(+ here's a link to Dreyfus' essay Why Heideggerian AI failed http://cid.nada.kth.se/en/HeideggerianAI.pdf)
Neat. Think it'll run on UCB? Those Terrapin licenses are expensive.
I think I might need some of your nitrous oxide for the LLogo sources, though. I am not fluent in maclisp. :-)