Looking for Clip Art.

[swestrup]

I'm currently looking for some clip art. What would be ideal would be a drawing of a busy farm scene, complete with farmer, cows, chickens, pigs, barn, etc. I'm looking for something which is a) unencumbered (ie, I don't have to pay for commercial use) and b) would be suitable to use as an illustration in a kids book.

I know that there are bazillions of clip-art repositories on the net, both free and pay, but so far I've found nothing even remotely suitable.