Hi Dragonslayer!
I like stistics, before mead, statistics was my weakness.
In Nicaragua there is an office that keep data about every good that is imported/exported or just produced here, this information is public, but you have to pay a very low fee to obtain any data. In the past I used them for my research works, now I use them mostly to know the wine's prices and how many bottles Nicaragua imports, I also know how many honey Nicaragua export and the honey's price. I have the complete database of Nicaraguan beekepers. This office also has information about the companies, but it is not public, well, at least not for me.
I think that in the US should be a similar office too, you just have to find it (them?). I found this office during my graduate studies. Busineess schools are good place to start, I'm sure that that kind of office should exist in the US.
By the way, about universities, I think that universities may be a good source of information too. I know two US universities involved in wine, I think that might be more, but these are those that I know. They are UC Davis and Purdue. Purdue has a annual wine competition that includes few mead categories, it will be a good idea to knock thier doors.
Few month ago IanB started this thread:
http://www.gotmead.com/forum/showthread.php?t=17894
A good one.
Saludos,