I have taken part in a sketchbook show organised by The Art House Coop for the past few years now. They have recently moved from Atlanta to Brooklyn where they have opened a library, so any one can visit and borrow your sketchbook. You are sent a Moleskin sketchbook and you choose a title, you respond in any way you like within the confines of the book and then post your book to New York where it enters the library. At least some new libraries are up and running and forward thinking and open.
You can see an article in the NY Mag , where the show has been reviewed, if you are lucky enough to be in New York you can go and tell me what its like or send me a photo, I would love to know what it all looks like.