The British Vintage Wireless Sociey (http://www.bvws.org.uk/) looks like a good starting point; I'd guess there is a US equivalent - not sure where you are, Don. Other than that, Googling 'vintage wireless' or 'vintage radio' produces quite a lot of hits for people who like these devices. As with most things that have been out of production for a few years, it's probably worth joining a club, then you've got lots of help & experience on tap.
Maybe worth looking through some back issues of the hobby magazines of 40-odd years ago (always liked the "Radio Constructor" as a kid), as they regularly published details as Stewart suggests above. The only obvoius problem I can see is getting some of the more specialist RF valves new; there's a limited range of AF valves still available as some people prefer them for HiFi applications.

Good luck, anyway

Ted