Hi Phil,
After a little searching, I really don't have a particular source for you, but did find a list of gourd growers. Now you can have all the fun of looking through these websites!
You'll have to google: gourdsbyjeanie/gourd_suppliers

Also, thought you might be interested in:
http://home.att.net/~nmgs/seedbank.htm

Your NM Gourd Society is starting a seed bank and should have that info for you soon.

Good Luck,
Jan