Over 100 Museums invite you to "Color their collections" with free adult coloring books.

Museums and libraries around the world participate in the Color Our Collections campaign. For it, they create free adult coloring books with free printable coloring pages, based on items from their collections. There's something for everyone, depending on your interests.
Read more: http://mymodernmet.com/free-coloring-pages-color-our-collections/?source=Snapzu