Zane H. Healy wrote:
 I'm leaning more and more towards DIY, and have been threatening to
 buy a book or two on the subject (I've been thinking about the books
 by Morgan Jones, "Valve Amplifiers, 3rd Ed." and "Building Valve
 Amplifiers").  Part of it is the potential cost savings, and the other
 part is simply the challenge of building my own setup.  I should have
 pretty much all the equipment I need, I just need parts.
 
The web can be your best freind here. The circuit I am using I pulled
off the web 2 years ago. My amp works
fine but the web page is no-more. 
http://www.percyaudio.com/   Percy
Audio  has a  wide selection  of parts
other than  tubes.  Expect  audio  quality to be expensive but shop
around for the best value and least amount
of snake oil. Also take your time a good amp is a work of art, it take
time and remember  high  voltage  does
 not  go well  with Cats, Kids or Bath-tubs.
          Zane
 
PS. Remember some  metal  work is  involved  with  most  tube amps  so
keep that in mind.