Online Gallery from the New York Public Library

The New York Public Library is creating a new online gallery of over 275,000 images digitized from it's collection. It contains illuminated manuscripts and vintage posters, rare prints, photographs and historical maps, plus illustrated books and much more. It's being optimized to handle the likely very high traffic to the site, but it'll be available here once it's ready. You can read more about it here. This looks like it will be very deeply cool once it's up and running.