More and more museums are going “Open Source” and letting large portions of their collections be available for download and reuse free-of charge.
The Cleveland Museum of Art is the latest major museum to take this step.
Here are three posts and lists sharing links to other museums doing taking the same action:
Museums that Give Away Open Access Images of Public Domain Work is from The Creative Law Center.
Visual Resources: List of Image Collections is from Carnegie Mellon University.
I’m adding this post to The Best Online Sources For Images.