Hi
As far as I know, it costs nothing to join. They have a big jar where
you can put donations in when you come in the door. They have a very
extensive library and some of the researcher are absolutely superb.
They are being remodeled right now under a grant program...it looks
beautiful! There's a couple of log cabins they've reconstructed too.
Some of the most beautiful china in the nation is on display also. Take
care and happy hunting!