Traditional role of the mountain dulcimer.
General mountain dulcimer or music discussions
Nate said "I assume the original developers of dulcimers were very innovative folks who were applying the concepts of older zithers to the materials they had in the Appalachians. This makes it hard for me to tell the difference between deliberate choices made by the 'masters of old' and choices made purely out of necessity. It's hard for me to imagine that they would have used staple frets if they had access to fretwire."
You have to remember that those "innovative folks...applying the concepts of older zithers...": were not consciously doing anything.
They were random, scattered individuals who heard and/or saw an instrument someone had -- who in turn had seen/heard someone else's instrument... back through time to the zitters which came over in the late 1500s/early 1600s. There probably were no Euro-trained luthiers among the Moravians, the builders to follow were trying to replicate instruments that had come from the old country. -- out of necessity. Staple frets of the early 19th century were the high-tech of the time. prior to that there were wood/bone/ivory inlaid frets or the tied gut frets of Lutes. Mushroom frets weren't invented until the mid 1800s in Europe.