I signed up a few weeks ago for this project:
Sketchbooks offers a glimpse into an artist’s life, which is why we want to make a publicly accessible library of sketchbooks that people can browse, peruse, and check out. We think that this sketchbook collection has the potential to open a new line of communication between the artist and the viewer, since the experience of making and viewing are both so personal. Anyone can sign up to receive a sketchbook. Before joining our permanent collection, sketchbooks will be exhibited at select galleries across the US.
It’s organized by a group in Atlanta called Art House Co-op- they’ve got a series of projects going on, and they’ve been doing the this particular one for a few years now. I really like that they plan on exhibiting them as a library; and that they have a site with archived submitted images from the participating artists : http://arthousecoop.com/submissions
The deadline to signup to participate is this Sunday, November 1st. (Warning- There is an entry fee).