Hey Tim,
I did some more research over the past few days and found out some interesting stuff. Apparently Michael Lennon and Bruce Scotten are luthiers that you would study under in Spring Hill (near Nashville). The place is called The Apprentice Shop and is still open today. It turns out these guys made some guitars for Fender too. I also found this:
http://books.google.com/books?id=t_B-xn ... CC0Q6AEwAASo, I looked inside the courting dulcimer and it didn't have their names on it, but it had Crying Otter and Springhill, TN inside. The two dulcimers have the same soundholes and are made with similar craftsmanship, so I assume they came from the same factory. However, perhaps Lennon and Scotten worked on the single dulcimer, and not the courting dulcimer. Perhaps one is older than the other? The courting also has the number 2 and 047 a few spaces over. The single dulcimer has no numbers.
Anyway, I just thought I'd share all of this info because I found it rather interesting. The great news? This shop is still open and an hour away from where I live. The courting dulcimer needs some repair so maybe I can take them both down and get more info? And I'll check out ED too.
Sorry for the long post. Yes you're right though, these dulcimers sound great and I'm really enjoying them, and will continue to even if I know nothing about them. I was hooked once I had started playing them in the store.