Ralph Lee Smith has done more research on the Appalachian Dulcimer than anyone else I know. His 1997 book Appalachian Dulcimer Traditions shows examples of the instruments of many of the known builders, and covers the history as well as any study I've seen. Unfortunately, the only copy I find via www.Bookfinder.com has a price of $31 attached. The book is worth it, I'd say, but that price really is off-putting. If you can find a copy at your local library, I'd urge you to check it out.

Sandy