And our graphic designer just told me about another one that is good to use. Here is what she said:
If you are ever looking for an image to use in a project that is copyright free, the Wiki Commons is a great place to start:
http://commons.wikimedia.org/wiki/Main_PageAll of their images are freely usable.
Their category browsing is a little lame, but the search function works well.
For example, searching for "John Tenniel" gives you all the Alice in Wonderland images on one page:
http://commons.wikimedia.org/wiki/John_Tenniel or...Toulouse-Lautrec
http://commons.wikimedia.org/wiki/Henri_de_Toulouse-Lautrecor...whom or whatever you want