The one here:
Seems to be good enough. Not color but looks pretty good. It is about 40% of the way down the page. Two parts, looks like 1 is theory of operation and all that, didn't see the tunnel diode tutorial but you know how they are. All the schematics seem to be in 2. You could just about skip a year of engineering school reading those things. So if nothing else you need part 2. The whole thing is about 300MB.
Couldn't find R970 on the print, where is it ?
Jeff Urban