Retrievr is a program that lets you search through Flickr with a rough sketch. It’s kind of cool, you can use a color and it will bring up photos with only that color relation or use black and you will get black and white photos.
I drew the little black and white sketch and one of my search options was the black and white photo you see above from Noqontrol. I have to admit, he’s got some great and really weird photography, but some is a little questionable and maybe not so safe for work.
I’m either a really poor artist or it doesn’t work so good. See what you can dig up with your artistic abilities. Personally, I like trying to draw stuff with such an uncontrollable medium.