The Wilsons are somewhat legendary in Michigan, having built dulcimers and exhibited them at festivals. As I understand it, Richard built the dulcimers and Denise provided the inlay work, and maybe the soundholes. They do (did?) excellent work.
That inlay on the back looks really cool, John!
There is also a McSpadden "Sweet Song" dulcimer kit listed on the site.
I just found this listed on shopgoodwill.com! A very pretty, high-quality dulcimer with beautiful heart and flying geese soundholes. Flying geese inlay on the back. Item #58634975.