Turns out that one doesn't need to scan anything to locate escher pictures. There's an escher web site with a bunch of great images, just aching to be turned into image pan visuals. How about this one?

edit: Crap, didn't check the file size before uploading it. It came out to bigger than 100k. Sorry. If you want to make your own, go to http://www.worldofescher.com. Enjoy!