[JohnR]

Hadn't noticed this until just now:

http://www.amazon.com/Tubes-Circuits-Bruce-Rozenblit/dp/1477532862/

[Ericus Rex]

I'm on my second read of it.  Very good.  Still some holes in the explanations, at least for a toobnoob like me.  But many of my old questions were answered by this book.  Recommended.