Try URL:
http://www.vacuumtubesinc.com/

Also repeat your post on this news group

rec.antiques.radio+phono

Thats where the antique radio gurus hang out.

--
CL -- I doubt, therefore I might be !

"R D" wrote in message
...
Now for something completely different, an On-topic question:

What is a good source for Tubes for a Hallicrafters S-20R Sky Champion?

Robert