Where to get background/negative sample images for haar training?

I need a collection of sample images to train a Haar-based classifier for plate detection. I know this question has been asked already, but the source on googlecode is dead.

http://tutorial-haartraining.googlecode.com/svn/trunk/data/negatives/

Where to get background sample images for haar training?

Where to get negative sample images for Haar training?

Maybe this one? https://github.com/handaga/tutorial-haartraining/tree/master/data/negatives

It says

Automatically exported from code.google.com/p/tutorial-haartraining