Where to find art that's legal...

[Ranger2]

to post on FaceBook. I'm making a quiz on FaceBook, and I can't find a good place to get pictures. I need at least five pictures:
A shot of Curly Howard
A shot of Moe Howard
A shot of Shemp Howard
A shot of Larry Fine
A shot of three of the stooges (most likely excluding Shemp)
However, I don't want to get my butt sued for copyright infringment or anything like that. My quiz is non-profit or anything, and I just want the pictures for my quiz. That's all!
Anyone know a place where I could find pictures that I either don't have to give credit for or give little credit to (as in just mentioning the name?
Thanks for the help!

[Captain]

Please read the Art Forum Rules before posting here, you must have a piece of original art in the first post of every new thread.

Also this kind of question belongs over in General, the art forum is for posting art and discussing each others art, not where you can snag other people's art