If you do, go early; I spent many hours sifting through all the books. Thankfully the friend I brought with me is a librarian and didn't mind spending half a day longer than we'd planned. Oh, and if it's chilly, wear something warm; part of the building is unheated. I'm going to go back this summer when it's warm.
It is a lovely place. I'm sorry I didn't tip you off about it; after all, you do live somewhere around there, don't you? *sheepish grin*
Ah, but you did tip me off, Bill. That's what blogs are for! Hope all is well.