I was about to say, there's a PDF out there (I did the scanning from my physical copy, after we got permission). Thanks for digging it up!

Edit: Wow, I dug up my original files and realized I did this almost ten years ago: http://www.mrbill.net/byo/

Thanks for the good work! I just want you to know that your scan is still going good work 10 years later. I'm going to read through it and hopefully I end up with a more modern version of this Z80 machine.

The first thing I did was search for the title when I saw the price and this link was what I found.

I doubt that I'll ever get around to building one but now, I have the option.