Dulcimer Books

I received such a sweet gift today, several dulcimer books. I have now began a small collection of dulcimer books that let me to wonder:

What is your favorite book?

How many do you have?

Have they been very helpful?

My new books:

Mel Bay's Complete Dulcimer Handbook by Mark Biggs

Mel Bay's complete book of Celtic Music for Appalachian Dulcimer by Mark Nelson

The Dulcimer Book by Jean Ritchie