Have you all seen the beautiful New York Public Library Digital Gallery?
These galleries have been all over the blog world lately and I finally had a few minutes to look through a few of the galleries and here are some of my favorites:
There are millions of images to look through. It seems like you can purchase professional prints of a lot of these images but the disclaimer says the images are for free and open use. Seems like you might be able to save these images and use them for your personal use.
Have fun looking through the galleries - and let me know which are your favorites!