Liberty Science Center used to take them and put them on display and for deconstruction. you might want to check and see if they still do....
I have read that electronics recycling programs melt the circuit boards thus separating the metals which truly get reused. I think that's the best use for it.
You could always try the Facebook swap and see if anyone wants something historic for a collection (video games and non-PC hardware would probably prove to be more popular though, doesn't hurt to try. Apart from that probably just recycle it like you would a current computer.
Achieve Foundation's Maker Madness might like it. This year it will be April 30. Last year there was a booth with tons of old electronics (cell phones, computers, tv clickers, etc) where kids were taking them apart to examine all of the parts.
Promote your business here - Businesses get highlighted throughout the site and you can add a deal.
Cleaning house and came across my old, old IBM PC. Two floppy drives! Yikes. Any use for this, either practical or historic? Or to the dump?
Does bring back memories...