Just so everyone knows,
You still have a chance to see the exhibit if you haven't been able to make it there yet. I was there this past weekend, and the receptionist said the exhibit won't be taken down right away at the end of March (today), like originally planned. Instead you can plan on the exhibit being there for at least another three weeks, maybe more. They are not going to take the exhibit down until the contractor who is redoing some of the rooms (I presume to ready them for another exhibit) tells them he needs to access the area currently occupied by the dulcimers.
So, if you haven't made it, and you have some free time in the next three weeks or so, you still have a chance to see it in person.
I highly recommend it.