/diy/ - Do It Yourself

Hi /ohm/,
I've always liked old minicomputers, even stuff like the altair 8800, things with nothing more than a faceplate, some switches and a cpu.
I've been meaning to learn the low level stuff for ages, but haven't been able to get my hands on old hardware.
Now I came across this little thing, an OSI 300 computer "trainer". Basically the simplest of simple machines, designed specifically to teach people how to use minicomputers.
Anyway, someone made a small batch of reproduction units at a con a while back and was, for a while, selling them, he has a blog here:
http://randomvariations.com/category/osi-300-trainer/
But his blog's gone dead for a few years and I can't find any way to contact him.
I doubt he'd have many if any units left to sell, but at very least I'd like to get a hold of the Gerbers/schematics. All I can find is a PDF and, whilst fun, I'd rather not have to redo the entire schematic and board myself if I don't have to.
Anyone think they can help? Anyone recognize this board from anywhere?
Thanks.